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Loryna™
(drospirenone and ethinyl estradiol) Tablets 3 mg /0 .0 2 mg, for oral use
WARNING
CIGARETTE SMOKING AND SERIOUS CARDIOVASCULAR EVENTS
Cigarette smoking increases the risk of serious cardiovascular events from combination oral contraceptives (COC) use. This risk increases with age, particularly in women over 35 years of age, and with the number of cigarettes smoked. For this reason, COCs should not be used by women who are over 35 years of age and smoke. [See CONTRADICTIONS]
Loryna™ (drospirenone and ethinyl estradiol tablets, USP) provides an oral contraceptive regimen consisting of 24 peach active film-coated tablets each containing 3 mg of drospirenone and 0.02 mg of ethinyl estradiol and 4 white inert film coated tablets.
Each active tablet consists of black iron oxide, croscarmellose sodium, lactose fast flo, polyethylene glycol, magnesium stearate, polysorbate 80, polyvinyl alcohol, povidone K-30, pregelatinized starch, talc, titanium dioxide, red iron oxide, yellow iron oxide.
The inert tablet consists of andydrous lactose, magnesium stearate, povidone K-30, polyethylene glycol, polyvinyl alcohol-part hydrolyzed, talc and titanium dioxide.
Drospirenone (6R,7R,8R,9S,10R,13S,14S,15S,16S,17S)-1,3',4',6,6a,7,8,9,10,11, 12,13,14,15,15a,16- hexadecahydro-10,13-dimethylspiro-[17H-dicyclopropa- [6,7:15,16]cyclopenta[a]phenanthrene-17,2 '(5H)-furan]-3,5 '(2H)-dione) is a synthetic progestational compound and has a molecular weight of 366.5 and a molecular formula of C24H30O3.
Ethinyl estradiol (19-nor-17α-pregna 1,3,5(10)-triene-20-yne-3, 17-diol) is a synthetic estrogenic compound and has a molecular weight of 296.4 and a molecular formula of C20H24O2.
The structural formulas are as follows:
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Loryna™ (drospirenone and ethinyl estradiol tablets) are indicated for use by women to prevent pregnancy.
Loryna™ is also indicated for the treatment of symptoms of premenstrual dysphoric disorder (PMDD) in women who choose to use an oral contraceptive as their method of contraception. The effectiveness of Loryna™ for PMDD when used for more than three menstrual cycles has not been evaluated.
The essential features of PMDD according to the Diagnostic and Statistical Manual-4th edition (DSMIV) include markedly depressed mood, anxiety or tension, affective lability, and persistent anger or irritability. Other features include decreased interest in usual activities, difficulty concentrating, lack of energy, change in appetite or sleep, and feeling out of control. Physical symptoms associated with PMDD include breast tenderness, headache, joint and muscle pain, bloating and weight gain. In this disorder, these symptoms occur regularly during the luteal phase and remit within a few days following onset of menses; the disturbance markedly interferes with work or school, or with usual social activities and relationships with others. Diagnosis is made by healthcare providers according to DSMIV criteria, with symptomatology assessed prospectively over at least two menstrual cycles. In making the diagnosis, care should be taken to rule out other cyclical mood disorders.
Loryna™ has not been evaluated for the treatment of premenstrual syndrome (PMS).
Loryna™ tablets are indicated for the treatment of moderate acne vulgaris in women at least 14 years of age, who have no known contraindications to oral contraceptive therapy and have achieved menarche. Drospirenone and ethinyl estradiol tablets should be used for the treatment of acne only if the patient desires an oral contraceptive for birth control.
Take one tablet by mouth at the same time every day. The failure rate may increase when pills are missed or taken incorrectly.
To achieve maximum contraceptive and PMDD effectiveness, drospirenone and ethinyl estradiol tablets must be taken exactly as directed, in the order directed on the blister pack. Single missed pills should be taken as soon as remembered.
Instruct the patient to begin taking Loryna™ tablets either on the first day of her menstrual period (Day 1 Start) or on the first Sunday after the onset of her menstrual period (Sunday Start).
During the first cycle of Loryna™ tablets use, instruct the patient to take one peach drospirenone and ethinyl estradiol tablet daily, beginning on Day 1 of her menstrual cycle. (The first day of menstruation is Day 1.) She should take one peach Loryna™ tablet daily for 24 consecutive days, followed by one white inert tablet daily on days 25 through 28. Loryna™ tablets should be taken in the order directed on the package at the same time each day, preferably after the evening meal or at bedtime with some liquid, as needed. Loryna™ tablets can be taken without regard to meals. If drospirenone and ethinyl estradiol tablets are first taken later than the first day of the menstrual cycle, Loryna™ tablets should not be considered effective as a contraceptive until after the first 7 consecutive days of product administration. Instruct the patient to use a non-hormonal contraceptive as back-up during the first 7 days. The possibility of ovulation and conception prior to initiation of medication should be considered.
During the first cycle of Loryna™ tablets use, instruct the patient to take one peach Loryna™ tablet daily, beginning on the first Sunday after the onset of her menstrual period. She should take one peach Loryna™ tablet daily for 24 consecutive days, followed by one white inert tablet daily on days 25 through 28. Loryna™ tablets should be taken in the order directed on the package at the same time each day, preferably after the evening meal or at bedtime with some liquid, as needed. Loryna™ tablets can be taken without regard to meals. Loryna™ tablets should not be considered effective as a contraceptive until after the first 7 consecutive days of product administration. Instruct the patient to use a non-hormonal contraceptive as back-up during the first 7 days. The possibility of ovulation and conception prior to initiation of medication should be considered.
The patient should begin her next and all subsequent 28-day regimens of Loryna™ tablets on the same day of the week that she began her first regimen, following the same schedule. She should begin taking her peach tablets on the next day after ingestion of the last white tablet, regardless of whether or not a menstrual period has occurred or is still in progress. Anytime a subsequent cycle of Loryna™ tablets are started later than the day following administration of the last white tablet, the patient should use another method of contraception until she has taken a peach Loryna™ tablets daily for seven consecutive days.
When switching from another birth control pill, Loryna™ tablets should be started on the same day that a new pack of the previous oral contraceptive would have been started.
When switching from a transdermal patch or vaginal ring, Loryna™ tablets should be started when the next application would have been due. When switching from an injection, Loryna™ tablets should be started when the next dose would have been due. When switching from an intrauterine contraceptive or an implant, Loryna™ tablets should be started on the day of removal.
Withdrawal bleeding usually occurs within 3 days following the last peach tablet. If spotting or breakthrough bleeding occurs while taking Loryna™ tablets, instruct the patient to continue taking Loryna™ tablets by the regimen described above. Counsel her that this type of bleeding is usually transient and without significance; however, advise her that if the bleeding is persistent or prolonged, she should consult her healthcare provider.
Although the occurrence of pregnancy is low if Loryna™ tablets are taken according to directions, if withdrawal bleeding does not occur, consider the possibility of pregnancy. If the patient has not adhered to the prescribed dosing schedule (missed one or more active tablets or started taking them on a day later than she should have), consider the possibility of pregnancy at the time of the first missed period and take appropriate diagnostic measures. If the patient has adhered to the prescribed regimen and misses two consecutive periods, rule out pregnancy. Discontinue Loryna™ tablets if pregnancy is confirmed.
The risk of pregnancy increases with each active peach tablet missed. For additional patient instructions regarding missed pills, see the “WHAT TO DO IF YOU MISS PILLS” section in the FDA Approved Patient Labeling . If breakthrough bleeding occurs following missed tablets, it will usually be transient and of no consequence. If the patient misses one or more white tablets, she should still be protected against pregnancy provided she begins taking a new cycle of peach tablets on the proper day.
For postpartum women who do not breastfeed or after a second trimester abortion, start Loryna tablets no earlier than 4 weeks postpartum due to the increased risk of thromboembolism. If the patient starts on Loryna™ tablets postpartum and has not yet had a period, evaluate for possible pregnancy, and instruct her to use an additional method of contraception until she has taken Loryna™ tablets for 7 consecutive days.
In case of severe vomiting or diarrhea, absorption may not be complete and additional contraceptive measures should be taken. If vomiting occurs within 3 to 4 hours after tablet-taking, this can be regarded as a missed tablet.
Loryna™ (drospirenone and ethinyl estradiol tablet, USP) is available in blister packs.
Each blister pack (28 film-coated tablets) contains in the following order:
Loryna™ (drospirenone and ethinyl estradiol tablets, USP) 3 mg/0.02 mg are available as follows:
Each blister card contains 24 active tablets and 4 inactive tablets. The 24 active tablets are peach, round, film-coated, debossed with SZ on one side and U2 on the other side. The 4 inert tablets are white, round, film-coated, debossed with SZ on one side and J1on the other side.
NDC 70700-114-84, one box containing 1 individual unit
carton
NDC 70700-114-85, one box containging 3 individual unit
cartons.
Store at 20° to 25° C (68° to 77° F) [see USP Controlled Room Temperature].
Manufactured by Laboratorios Leon Farma S.A., Spain. For Xiromed, LLC. Florham Park, NJ 07932. Product of Spain. Revised: Aug 2018
The following serious adverse reactions with the use of COCs are discussed elsewhere in the labeling:
Adverse reactions commonly reported by COC users are:
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.
The data provided reflect the experience with the use of drospirenone and ethinyl estradiol in the adequate and well-controlled studies for contraception (N=1,056) and for moderate acne vulgaris (N=536).
For contraception, a Phase 3, multicenter, multinational, open-label study was conducted to evaluate safety and efficacy up to one year in 1,027 women aged 17 to 36 who took at least one dose of drospirenone and ethinyl estradiol. A second Phase 3 study was a single center, open-label, activecontrolled study to evaluate the effect of 7 28-day cycles of drospirenone and ethinyl estradiol on carbohydrate metabolism, lipids and hemostasis in 29 women aged 18 to 35. For acne, two multicenter, double-blind, randomized, placebo-controlled studies, in 536 women aged 14 to 45 with moderate acne vulgaris who took at least one dose of drospirenone and ethinyl estradiol, evaluated the safety and efficacy during up to 6 cycles.
The adverse reactions seen across the 2 indications overlapped, and are reported using the frequencies from the pooled dataset. The most common adverse reactions (≥ 2% of users) were: headache/migraine (6.7%), menstrual irregularities (including vaginal hemorrhage [primarily spotting] and metrorrhagia (4.7%), nausea/vomiting (4.2%), breast pain/tenderness (4%) and mood changes (mood swings, depression, depressed mood and affect lability) (2.2%).
Safety data from trials for the indication of PMDD are reported separately due to differences in study design and setting in the Contraception and Acne studies as compared to the PMDD clinical program.
Two (one parallel and one crossover designed) multicenter, double-blind, randomized, placebocontrolled trials for the secondary indication of treating the symptoms of PMDD evaluated safety and efficacy of drospirenone and ethinyl estradiol during up to 3 cycles among 285 women aged 18-42, diagnosed with PMDD and who took at least one dose of drospirenone and ethinyl estradiol.
Common adverse reactions (≥ 2% of users) were: menstrual irregularities (including vaginal hemorrhage [primarily spotting] and metrorrhagia) (24.9%), nausea (15.8%), headache (13.0%), breast tenderness (10.5%), fatigue (4.2%), irritability (2.8%), decreased libido (2.8%), increased weight (2.5%), and affect lability (2.1%).
Of 1,056 women, 6.6% discontinued from the clinical trials due to an adverse reaction; the most frequent adverse reactions leading to discontinuation were headache/migraine (1.6%) and nausea/vomiting (1.0%).
Of 536 women, 5.4% discontinued from the clinical trials due to an adverse reaction; the most frequent adverse reaction leading to discontinuation was menstrual irregularities (including menometrorrhagia, menorrhagia, metrorrhagia and vaginal hemorrhage) (2.2%).
Of 285 women, 11.6% discontinued from the clinical trials due to an adverse reaction; the most frequent adverse reactions leading to discontinuation were: nausea/vomiting (4.6%), menstrual irregularity (including vaginal hemorrhage, menorrhagia, menstrual disorder, menstruation irregular and metrorrhagia) (4.2%), fatigue (1.8%), breast tenderness (1.4%), depression (1.4%), headache (1.1%), and irritability (1.1%).
Contraception Clinical Trials: migraine and cervical dysplasia
Acne Clinical Trials: none reported in the clinical trials
PMDD Clinical Trials: cervical dysplasia
The following adverse reactions have been identified during post approval use of drospirenone and ethinyl estradiol. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
Adverse reactions are grouped into System Organ Classes, and ordered by frequency.
Vascular disorders: Venous and arterial thromboembolic events (including pulmonary emboli, deep vein thrombosis, cerebral thrombosis, retinal thrombosis, myocardial infarction and stroke), hypertension (including hypertensive crisis)
Hepatobiliary disorders: Gallbladder disease, liver function disturbances, liver tumors
Immune system disorders: Hypersensitivity (including anaphylactic reaction)
Metabolism and nutrition disorders: Hyperkalemia, hypertriglyceridemia, changes in glucose tolerance or effect on peripheral insulin resistance (including diabetes mellitus)
Skin and subcutaneous tissue disorders: Chloasma, angioedema, erythema nodosum, erythema multiforme
Gastrointestinal disorders: Inflammatory bowel disease
Musculoskeletal and connective tissue disorders: Systemic lupus erythematosus
Consult the labeling of all concurrently-used drugs to obtain further information about interactions with hormonal contraceptives or the potential for enzyme alterations.
Drugs or herbal products that induce certain enzymes, including cytochrome P450 3A4 (CYP3A4), may decrease the effectiveness of COCs or increase breakthrough bleeding. Some drugs or herbal products that may decrease the effectiveness of hormonal contraceptives include phenytoin, barbiturates, carbamazepine, bosentan, felbamate, griseofulvin, oxcarbazepine, rifampin, topiramate and products containing St. John's wort. Interactions between oral contraceptives and other drugs may lead to breakthrough bleeding and/or contraceptive failure. Counsel women to use an alternative method of contraception or a back-up method when enzyme inducers are used with COCs, and to continue back-up contraception for 28 days after discontinuing the enzyme inducer to ensure contraceptive reliability.
Co-administration of atorvastatin and certain COCs containing EE increase AUC values for EE by approximately 20%. Ascorbic acid and acetaminophen may increase plasma EE concentrations, possibly by inhibition of conjugation.
Concomitant administration of moderate or strong CYP3A4 inhibitors such as azole antifungals (e.g., ketoconazole, itraconazole, voriconazole, fluconazole), verapamil, macrolides (e.g., clarithromycin, erythromycin), diltiazem, and grapefruit juice can increase the plasma concentrations of the estrogen or the progestin or both. In a clinical drug-drug interaction study conducted in premenopausal women, once daily co-administration of DRSP 3 mg/EE 0.02 mg containing tablets with strong CYP3A4 inhibitor, ketoconazole 200 mg twice daily for 10 days resulted in a moderate increase of DRSP systemic exposure. The exposure of EE was increased mildly [see WARNINGS AND PRECAUTIONS and CLINICAL PHARMACOLOGY].
Human Immunodeficiency Virus (HIV)/Hepatitis C virus (HCV) Protease Inhibitors And Non-Nucleoside
Significant changes (increase or decrease) in the plasma concentrations of estrogen and progestin have been noted in some cases of co-administration with HIV/HCV protease inhibitors or with non-nucleoside reverse transcriptase inhibitors.
There have been reports of pregnancy while taking hormonal contraceptives and antibiotics, but clinical pharmacokinetic studies have not shown consistent effects of antibiotics on plasma concentrations of synthetic steroids.
COCs containing EE may inhibit the metabolism of other compounds. COCs have been shown to significantly decrease plasma concentrations of lamotrigine, likely due to induction of lamotrigine glucuronidation. This may reduce seizure control; therefore, dosage adjustments of lamotrigine may be necessary. Consult the labeling of the concurrently-used drug to obtain further information about interactions with COCs or the potential for enzyme alterations.
In clinical studies, administration of a hormonal contraceptive containing EE did not lead to any increase or only to a weak increase in plasma concentrations of CYP3A4 substrates (e.g., midazolam) while plasma concentrations of CYP2C19 substrates (e.g., omeprazole and voriconazole) and CYP1A2 substrates (e.g., theophylline and tizanidine) can have a weak or moderate increase.
Clinical studies did not indicate an inhibitory potential of DRSP towards human CYP enzymes at clinically relevant concentrations [see CLINICAL PHARMACOLOGY].
Women on thyroid hormone replacement therapy may need increased doses of thyroid hormone because serum concentration of thyroid-binding globulin increases with use of COCs.
There is a potential for an increase in serum potassium concentration in women taking drospirenone and ethinyl estradiol with other drugs that may increase serum potassium concentration [see WARNINGS AND PRECAUTIONS and CLINICAL PHARMACOLOGY]
Do not co-administer drospirenone and ethinyl estradiol with HCV drug combinations containing ombitasvir/paritaprevir/ritonavir, with or without dasabuvir, due to potential for ALT elevations [see WARNINGS AND PRECAUTIONS].
The use of contraceptive steroids may influence the results of certain laboratory tests, such as coagulation factors, lipids, glucose tolerance, and binding proteins. DRSP causes an increase in plasma renin activity and plasma aldosterone induced by its mild anti-mineralocorticoid activity. [See WARNINGS AND PRECAUTIONS and DRUG INTERACTIONS]
Included as part of the PRECAUTIONS section.
Stop Drospirenone and ethinyl estradiol tablets if an arterial or venous thrombotic (VTE) event occurs.
Based on presently available information on DRSP-containing COCs with 0.03 mg ethinyl estradiol (that is, Yasmin), DRSP-containing COCs may be associated with a higher risk of venous thromboembolism (VTE) than COCs containing the progestin levonorgestrel or some other progestins. Epidemiologic studies that compared the risk of VTE reported that the risk ranged from no increase to a three-fold increase. Before initiating use of drospirenone and ethinyl estradiol in a new COC user or a woman who is switching from a contraceptive that does not contain DRSP, consider the risks and benefits of a DRSP-containing COC in light of her risk of a VTE. Known risk factors for VTE include smoking, obesity, and family history of VTE, in addition to other factors that contraindicate use of COCs [see CONTRAINDICATIONS].
A number of studies have compared the risk of VTE for users of Yasmin (which contains 0.03 mg of EE and 3 mg of DRSP) to the risk for users of other COCs, including COCs containing levonorgestrel. Those that were required or sponsored by regulatory agencies are summarized in Table 1.
Table 1: Estimates (Hazard Ratios) of Venous
Thromboembolism Risk in Current Users of Yasmin Compared to Users of Oral
Contraceptives that Contain Other Progestins
| Epidemiologic Study (Author, Year of Publication) Population Studied | Comparator Product (all are low-dose COCs; with ≤0.04 mg of EE) | Hazard Ratio (HR) (95% CI) |
| i3 Ingenix (Seeger 2007) Initiators, including new users* | All COCs available in the US during the conduct of the study† | HR: 0.9 (0.5-1.6) |
| EURAS (Dinger 2007) | All COCS available in Europe during the conduct of the study‡ | HR: 0.9 (0.6-1.4) |
| Initiators, including new users | Levonorgestrel/EE | HR: 1 (0.6-1.8) |
| “FDA-funded study” (2011) New users | Other COCs available during the course of the study § | HR: 1.8 (1.3-2.4) |
| All users (i.e., initiation and continuing use of study combination hormonal contraception) | Levonorgestrel/0.03 mg EE Other COCs available during the course of the study | HR: 1.6 (1.1-2.2) |
| HR: 1.7 (1.4-2.1) | ||
| Levonorgestrel/0.03 mg EE | HR: 1.5 (1.2-1.8) | |
| *“New users” - no use of combination hormonal
contraception for at least the prior 6 months †Includes low-dose COCs containing the following progestins: norgestimate, norethindrone, levonorgestrel, desogestrel, norgestrel, medroxyprogesterone, or ethynodiol diacetate ‡Includes low-dose COCs containing the following progestins: levonorgestrel, desogestrel, dienogest, chlormadinone acetate, gestodene, cyproterone acetate, norgestimate, or norethindrone §Includes low-dose COCs containing the following progestins: norgestimate, norethindrone, or levonorgestrel |
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In addition to these “regulatory studies,” other studies of various designs have been conducted. Overall, there are two prospective cohort studies (see Table 1): the US post-approval safety study Ingenix [Seeger 2007], the European post-approval safety study EURAS (European Active Surveillance Study) [Dinger 2007]. An extension of the EURAS study, the Long-Term Active Surveillance Study (LASS), did not enroll additional subjects, but continued to assess VTE risk. There are three retrospective cohort studies: one study in the US funded by the FDA (see Table 1), and two from Denmark [Lidegaard 2009, Lidegaard 2011]. There are two case-control studies: the Dutch MEGA study analysis [van Hylckama Vlieg 2009] and the German case-control study [Dinger 2010]. There are two nested casecontrol studies that evaluated the risk of non-fatal idiopathic VTE: the PharMetrics study [Jick 2011] and the GPRD study [Parkin 2011]. The results of all of these studies are presented in Figure 1.
Figure 1: VTE Risk with Drospirenone and Ethinyl
Estradiol Relative to LNG-Containing COCs (adjusted risk#)
 |
Risk ratios displayed on logarithmic scale; risk ratio
< 1 indicates a lower risk of VTE for DRSP, > 1 indicates an increased
risk of VTE for DRSP.
*Comparator “Other COCs”, including LNG- containing COCs
† LASS is an extension of the EURAS study
#Some adjustment factors are indicated by superscript
letters: a) Current heavy smoking, b) hypertension, c) obesity, d) family
history, e) age, f) BMI, g) duration of use, h) VTE history, i) period of
inclusion, j) calendar year, k) education, l) length of use, m) parity, n)
chronic disease, o) concomitant medication, p) smoking, q) duration of
exposure, r) site
(References: Ingenix [Seeger 2007]1. EURAS
(European Active Surveillance Study) [Dinger 2007]2. LASS (Long-Term
Active Surveillance Study) [Dinger, unpublished document on file], FDA-funded study
[Sidney 2011]3. Danish [Lidegaard 2009]4. Danish
re-analysis [ Lidegaard 2011]5. MEGA study [van Hylckama Vlieg 2009]6.
German Case-Control study [Dinger 2010]7. PharMetrics [Jick 2011]8.
GPRD study [Parkin 2011]9)
Although the absolute VTE rates are increased for users of hormonal contraceptives compared to nonusers, the rates during pregnancy are even greater, especially during the post-partum period (see Figure 2). The risk of VTE in women using COCs has been estimated to be 3 to 9 per 10,000 woman-years. The risk of VTE is highest during the first year of use. Data from a large, prospective cohort safety study of various COCs suggest that this increased risk, as compared to that in non-COC users, is greatest during the first 6 months of COC use. Data from this safety study indicate that the greatest risk
Figure 2: Likelihood of Developin a VTE
 |
If feasible, stop drospirenone and ethinyl estradiol at least 4 weeks before and through 2 weeks after major surgery or other surgeries known to have an elevated risk of thromboembolism.
Start drospirenone and ethinyl estradiol no earlier than 4 weeks after delivery, in women who are not breastfeeding. The risk of postpartum thromboembolism decreases after the third postpartum week, whereas the risk of ovulation increases after the third postpartum week.
Use of COCs also increases the risk of arterial thromboses such as strokes and myocardial infarctions, especially in women with other risk factors for these events.
COCs have been shown to increase both the relative and attributable risks of cerebrovascular events (thrombotic and hemorrhagic strokes), although, in general, the risk is greatest among older (>35 years of age), hypertensive women who also smoke. COCs also increase the risk for stroke in women with other underlying risk factors.
Oral contraceptives must be used with caution in women with cardiovascular disease risk factors.
Stop drospirenone and ethinyl estradiol tablets if there is unexplained loss of vision, proptosis, diplopia, papilledema, or retinal vascular lesions. Evaluate for retinal vein thrombosis immediately. [See ADVERSE REACTIONS]
Drospirenone and ethinyl estradiol tablets contain 3 mg of the progestin DRSP which has antimineralocorticoid activity, including the potential for hyperkalemia in high-risk patients, comparable to a 25 mg dose of spironolactone. Drospirenone and ethinyl estradiol is contraindicated in patients with conditions that predispose to hyperkalemia (that is, renal impairment, hepatic impairment, and adrenal insufficiency). Women receiving daily, long-term treatment for chronic conditions or diseases with medications that may increase serum potassium concentration should have their serum potassium concentration checked during the first treatment cycle. Medications that may increase serum potassium concentration include ACE inhibitors, angiotensin-II receptor antagonists, potassium-sparing diuretics, potassium supplementation, heparin, aldosterone antagonists, and NSAIDS.
Consider monitoring serum potassium concentration in high-risk patients who take a strong CYP3A4 inhibitor long-term and concomitantly. Strong CYP3A4 inhibitors include azole antifungals (e.g. ketoconazole, itraconazole, voriconazole), HIV/HCV protease inhibitors (e.g., indinavir, boceprevir), and clarithromycin [see CLINICAL PHARMACOLOGY].
Women who currently have or have had breast cancer should not use drospirenone and ethinyl estradiol tablets because breast cancer is a hormonally-sensitive tumor.
There is substantial evidence that COCs do not increase the incidence of breast cancer. Although some past studies have suggested that COCs might increase the incidence of breast cancer, more recent studies have not confirmed such findings.
Some studies suggest that COCs are associated with an increase in the risk of cervical cancer or intraepithelial neoplasia. However, there is controversy about the extent to which these findings may be due to differences in sexual behavior and other factors.
Discontinue drospirenone and ethinyl estradiol if jaundice develops. Steroid hormones may be poorly metabolized in patients with impaired liver function. Acute or chronic disturbances of liver function may necessitate the discontinuation of COC use until markers of liver function return to normal and COC causation has been excluded.
Hepatic adenomas are associated with COC use. An estimate of the attributable risk is 3.3 cases/100,000 COC users. Rupture of hepatic adenomas may cause death through intra-abdominal hemorrhage.
Studies have shown an increased risk of developing hepatocellular carcinoma in long-term (>8 years) COC users. However, the attributable risk of liver cancers in COC users is less than one case per million users.
Oral contraceptive-related cholestasis may occur in women with a history of pregnancy-related cholestasis. Women with a history of COC-related cholestasis may have the condition recur with subsequent COC use.
During clinical trials with the Hepatitis C combination drug regimen that contains ombitasvir/paritaprevir/ritonavir, with or without dasabuvir, ALT elevations greater than 5 times the upper limit of normal (ULN), including some cases greater than 20 times the ULN, were significantly more frequent in women using ethinyl estradiol-containing medications, such as COCs. Discontinue drospirenone and ethinyl estradiol prior to starting therapy with the combination drug regimen ombitasvir/paritaprevir/ritonavir, with or without dasabuvir [see CONTRAINDICATIONS]. Drospirenone and ethinyl estradiol can be restarted approximately 2 weeks following completion of treatment with the Hepatitis C combination drug regimen.
For women with well-controlled hypertension, monitor blood pressure and stop drospirenone and ethinyl estradiol if blood pressure rises significantly. Women with uncontrolled hypertension or hypertension with vascular disease should not use COCs.
An increase in blood pressure has been reported in women taking COCs, and this increase is more likely in older women and with extended duration of use. The incidence of hypertension increases with increasing concentration of progestin.
Studies suggest a small increased relative risk of developing gallbladder disease among COC users.
Carefully monitor prediabetic and diabetic women who are taking drospirenone and ethinyl estradiol. COCs may decrease glucose intolerance in a dose-related fashion.
Consider alternative contraception for women with uncontrolled dyslipidemias. A small proportion of women will have adverse lipid changes while on COC’s.
Women with hypertriglyceridemia, or a family history thereof, may be at an increased risk of pancreatitis when using COCs.
If a woman taking drospirenone and ethinyl estradiol develops new headaches that are recurrent, persistent, or severe, evaluate the cause and discontinue drospirenone and ethinyl estradiol if indicated.
An increase in frequency or severity of migraine during COC use (which may be prodromal of a cerebrovascular event) may be a reason for immediate discontinuation of the COC.
Unscheduled (breakthrough or intracyclic) bleeding and spotting sometimes occur in patients on COCs, especially during the first three months of use. If bleeding persists or occurs after previously regular cycles, check for causes such as pregnancy or malignancy. If pathology and pregnancy are excluded, bleeding irregularities may resolve over time or with a change to a different COC.
Based on patient diaries from two contraceptive clinical trials of drospirenone and ethinyl estradiol tablets, 8 to 25% of women experienced unscheduled bleeding per 28-day cycle. A total of 12 subjects out of 1,056 (1.1%) discontinued due to menstrual disorders including intermenstrual bleeding, menorrhagia, and metrorrhagia.
Women who use drospirenone and ethinyl estradiol tablets may experience absence of withdrawal bleeding, even if they are not pregnant. Based on subject diaries from contraception trials for up to 13 cycles, 6 to 10% of women experienced cycles with no withdrawal bleeding. Some women may encounter post-pill amenorrhea or oligomenorrhea, especially when such a condition was pre-existent.
If withdrawal bleeding does not occur, consider the possibility of pregnancy. If the patient has not adhered to the prescribed dosing schedule (missed one or more active tablets or started taking them on a day later than she should have), consider the possibility of pregnancy at the time of the first missed period and take appropriate diagnostic measures. If the patient has adhered to the prescribed regimen and misses two consecutive periods, rule out pregnancy.
Extensive epidemiological studies have revealed no increased risk of birth defects in women who have used oral contraceptives prior to pregnancy. Studies also do not suggest a teratogenic effect, particularly in so far as cardiac anomalies and limb-reduction defects are concerned, when taken inadvertently during early pregnancy.
The administration of oral contraceptives to induce withdrawal bleeding should not be used as a test for pregnancy [see Use In Specific Populations].
Women with a history of depression should be carefully observed and drospirenone and ethinyl estradiol discontinued if depression recurs to a serious degree.
The use of COCs may change the results of some laboratory tests, such as coagulation factors, lipids, glucose tolerance, and binding proteins. Women on thyroid hormone replacement therapy may need increased doses of thyroid hormone because serum concentrations of thyroid-binding globulin increase with use of COCs. [see DRUG INTERACTIONS].
DRSP causes an increase in plasma renin activity and plasma aldosterone induced by its mild antimineralocorticoid activity.
A woman who is taking COCs should have a yearly visit with her healthcare provider for a blood pressure check and for other indicated healthcare.
In women with hereditary angioedema, exogenous estrogens may induce or exacerbate symptoms of angioedema. Chloasma may occasionally occur, especially in women with a history of chloasma gravidarum. Women with a tendency to chloasma should avoid exposure to the sun or ultraviolet radiation while taking COCs.
Advise the patient to read the “FDA-approved patient labeling.(PATIENT INFORMATION)”
In a 24 month oral carcinogenicity study in mice dosed with 10 mg/kg/day DRSP alone or 1 + 0.01, 3 + 0.03 and 10 + 0.1 mg/kg/day of DRSP and EE, 0.1 to 2 times the exposure (AUC of DRSP) of women taking a contraceptive dose, there was an increase in carcinomas of the harderian gland in the group that received the high dose of DRSP alone. In a similar study in rats given 10 mg/kg/day DRSP alone or 0.3 + 0.003, 3 + 0.03 and 10 + 0.1 mg/kg/day DRSP and EE, 0.8 to 10 times the exposure of women taking a contraceptive dose, there was an increased incidence of benign and total (benign and malignant) adrenal gland pheochromocytomas in the group receiving the high dose of DRSP. Mutagenesis studies for DRSP were conducted in vivo and in vitro and no evidence of mutagenic activity was observed.
There is little or no increased risk of birth defects in women who inadvertently use COCs during early pregnancy. Epidemiologic studies and meta-analyses have not found an increased risk of genital or nongenital birth defects (including cardiac anomalies and limb-reduction defects) following exposure to low dose COCs prior to conception or during early pregnancy.
The administration of COCs to induce withdrawal bleeding should not be used as a test for pregnancy. COCs should not be used during pregnancy to treat threatened or habitual abortion.
Women who do not breastfeed may start COCs no earlier than four weeks postpartum.
When possible, advise the nursing mother to use other forms of contraception until she has weaned her child. Estrogen-containing COCs can reduce milk production in breastfeeding mothers. This is less likely to occur once breastfeeding is well-established; however, it can occur at any time in some women. Small amounts of oral contraceptive steroids and/or metabolites are present in breast milk.
After oral administration of 3 mg DRSP/0.03 mg EE (Yasmin), about 0.02% of the DRSP dose was excreted into the breast milk of postpartum women within 24 hours. This results in a maximal daily dose of about 0.003 mg DRSP in an infant.
Safety and efficacy of drospirenone and ethinyl estradiol have been established in women of reproductive age. Efficacy is expected to be the same for postpubertal adolescents under the age of 18 and for users 18 years and older. Use of this product before menarche is not indicated.
Drospirenone and ethinyl estradiol have not been studied in postmenopausal women and is not indicated in this population.
Drospirenone and ethinyl estradiol is contraindicated in patients with renal impairment [see CONTRAINDICATIONS and WARNINGS AND PRECAUTIONS].
In subjects with creatinine clearance (CLcr) of 50 to 79 mL/min, serum DRSP levels were comparable to those in a control group with CLcr, ≥80 mL/min. In subjects with CLcr of 30 to 49 mL/min, serum DRSP concentrations were on average 37% higher than those in the control group. In addition, there is a potential to develop hyperkalemia in subjects with renal impairment whose serum potassium is in the upper reference range, and who are concomitantly using potassium sparing drugs [see CLINICAL PHARMACOLOGY].
Drospirenone and ethinyl estradiol is contraindicated in patients with hepatic disease [see CONTRAINDICATIONS and WARNINGS AND PRECAUTIONS]. The mean exposure to DRSP in women with moderate liver impairment is approximately three times higher than the exposure in women with normal liver function. Drospirenone and ethinyl estradiol has not been studied in women with severe hepatic impairment
No clinically significant difference was observed between the pharmacokinetics of DRSP or EE in Japanese versus Caucasian women [see CLINICAL PHARMACOLOGY].
REFERENCES
1. Seeger, J.D., Loughlin, J., Eng, P.M., Clifford, C.R., Cutone, J., and Walker, A.M. (2007). Risk of thromboembolism in women taking ethinylestradiol/drospirenone and other oral contraceptives. Obstet Gynecol 110, 587-593.
2. Dinger, J.C., Heinemann, L.A., and Kuhl-Habich, D. (2007). The safety of a drospirenone-containing oral contraceptive: final results from the European Active Surveillance Study on oral contraceptives based on 142,475 women-years of observation. Contraception 75, 344-354.
3. Combined hormonal contraceptives (CHCs) and the risk of cardiovascular endpoints. Sidney, S. (primary author) http://www.fda.gov/downloads/Drugs/DrugSafety/UCM277384.pdf, accessed Oct 27, 2011.
4. Lidegaard, O., Lokkegaard, E., Svendsen, A.L., and Agger, C. (2009). Hormonal contraception and risk of venous thromboembolism: national follow-up study. BMJ 339, b2890.
5. Lidegaard, O., Nielsen, L.H., Skovlund, C.W., Skjeldestad, F.E., and Lokkegaard, E. (2011). Risk of venous thromboembolism from use of oral contraceptives containing different progestogens and oestrogen doses: Danish cohort study, 2001-9. BMJ 343, d6423.
6. van Hylckama Vlieg, A., Helmerhorst, F.M., Vandenbroucke, J.P., Doggen, C.J., and Rosendaal, F.R. (2009). The venous thrombotic risk of oral contraceptives, effects of oestrogen dose and progestogen type: results of the MEGA case-control study. BMJ 339, b2921.
7. Dinger, J., Assmann, A., Mohner, S., and Minh, T.D. (2010). Risk of venous thromboembolism and the use of dienogest- and drospirenone-containing oral contraceptives: results from a German case-control study. J Fam Plann Reprod Health Care 36, 123-129.
8. Jick, S.S., and Hernandez, R.K. (2011). Risk of non-fatal venous thromboembolism in women using oral contraceptives containing drospirenone compared with women using oral contraceptives containing levonorgestrel: case-control study using United States claims data. BMJ 342, d2151.
9. Parkin, L., Sharples, K., Hernandez, R.K., and Jick, S.S. (2011). Risk of venous thromboembolism in users of oral contraceptives containing drospirenone or levonorgestrel: nested case-control study based on UK General Practice Research Database. BMJ 342, d2139.
There have been no reports of serious ill effects from overdose, including ingestion by children. Overdosage may cause withdrawal bleeding in females and nausea.
DRSP is a spironolactone analogue which has anti-mineralocorticoid properties. Serum concentration of potassium and sodium, and evidence of metabolic acidosis, should be monitored in cases of overdose.
Do not prescribe drospirenone and ethinyl estradiol to women who are known to have the following:
COCs lower the risk of becoming pregnant primarily by suppressing ovulation. Other possible mechanisms may include cervical mucus changes that inhibit sperm penetration and the endometrial changes that reduce the likelihood of implantation.
Drospirenone is a spironolactone analogue with anti-mineralocorticoid and antiandrogenic activity. The estrogen in drospirenone and ethinyl estradiol is ethinyl estradiol.
Two studies evaluated the effect of 3 mg DRSP / 0.02 mg EE combinations on the suppression of ovarian activity as assessed by measurement of follicle size via transvaginal ultrasound and serum hormone (progesterone and estradiol) analyses during two treatment cycles (21-day active tablet period plus 7-day pill-free period). More than 90% of subjects in these studies demonstrated ovulation inhibition. One study compared the effect of 3 mg DRSP/0.02 mg EE combinations with two different regimens (24-day active tablet period plus 4-day pill-free period vs. 21-day active tablet period plus 7- day pill-free period) on the suppression of ovarian activity during two treatment cycles. During the first treatment cycle, there were no subjects (0/49, 0%) taking the 24-day regimen who ovulated compared to 1 subject (1/50, 2%) using the 21-day regimen. After intentionally introduced dosing errors (3 missed active tablets on Days 1 to 3) during the second treatment cycle, there was 1 subject (1/49, 2%) taking the 24-day regimen who ovulated compared to 4 subjects (4/50, 8%) using the 21-day regimen.
Acne vulgaris is a skin condition with a multifactorial etiology including androgen stimulation of sebum production. While the combination of EE and DRSP increases sex hormone binding globulin (SHBG) and decreases free testosterone, the relationship between these changes and a decrease in the severity of facial acne in otherwise healthy women with this skin condition has not been established. The impact of the antiandrogenic activity of DRSP on acne is not known.
The absolute bioavailability of DRSP from a single entity tablet is about 76%. The absolute bioavailability of EE is approximately 40% as a result of presystemic conjugation and first-pass metabolism. The absolute bioavailability of drospirenone and ethinyl estradiol, which is a combination tablet of DRSP and EE stabilized by betadex as a clathrate (molecular inclusion complex), has not been evaluated. The bioavailability of EE is similar when dosed via a betadex clathrate formulation compared to when it is dosed as a free steroid. Serum concentrations of DRSP and EE reached peak levels within 1 to 2 hours after administration of drospirenone and ethinyl estradiol.
The pharmacokinetics of DRSP are dose proportional following single doses ranging from 1 to 10 mg. Following daily dosing of drospirenone and ethinyl estradiol, steady state DRSP concentrations were observed after 8 days. There was about 2 to 3 fold accumulation in serum Cmax and AUC (0–24h) values of DRSP following multiple dose administration of drospirenone and ethinyl estradiol (see Table 2).
For EE, steady-state conditions are reported during the second half of a treatment cycle. Following daily administration of drospirenone and ethinyl estradiol, serum Cmax and AUC (0–24h) values of EE accumulate by a factor of about 1.5 to 2 (see Table 2).
TABLE 2: Pharmacokinetic Parameters of Drospirenone
And Ethinyl Estradiol (DRSP 3 mg and EE 0.02 mg)
| DRSP | |||||
| Cycle/Day | No. of Subjects | Cmax* (ng/mL) | Tmax† (h) | AUC(0-24h) (ng•h/mL) | t½ (h) |
| 1/1 | 23 | 38.4 (25) | 1.5 (1-2) | 268 (19) | NA‡ |
| 1/21 | 23 | 70.3 (15) | 1.5 (1-2) | 763 (17) | 30.8 (22) |
| EE | |||||
| Cycle / Day | No. of Subjects | Cmax (pg/mL) | Tmax† (h) | AUC(0-24h) (pg•h/mL) | t½ (h) |
| 1/1 | 23 | 32.8 (45) | 1.5 (1-2) | 108 (52) | NA‡ |
| 1/21 | 23 | 45.1 (35) | 1.5 (1-2) | 220 (57) | NA |
| *geometric mean (geometric coefficient of variation) †median (range) ‡NA = Not available |
|||||
The rate of absorption of DRSP and EE following single administration of a formulation similar to drospirenone and ethinyl estradiol was slower under fed (high fat meal) conditions with the serum Cmax being reduced about 40% for both components. The extent of absorption of DRSP, however, remained unchanged. In contrast, the extent of absorption of EE was reduced by about 20% under fed conditions.
DRSP and EE serum concentrations decline in two phases. The apparent volume of distribution of DRSP is approximately 4 L/kg and that of EE is reported to be approximately 4 to 5 L/kg.
DRSP does not bind to SHBG or corticosteroid binding globulin (CBG) but binds about 97% to other serum proteins.
Multiple dosing over 3 cycles resulted in no change in the free fraction (as measured at trough concentrations). EE is reported to be highly but non-specifically bound to serum albumin (approximately 98.5 %) and induces an increase in the serum concentrations of both SHBG and CBG. EE induced effects on SHBG and CBG were not affected by variation of the DRSP dosage in the range of 2 to 3 mg.
The two main metabolites of DRSP found in human plasma were identified to be the acid form of DRSP generated by opening of the lactone ring and the 4,5-dihydrodrospirenone-3-sulfate, formed by reduction and subsequent sulfation. These metabolites were shown not to be pharmacologically active. Drospirenone is also subject to oxidative metabolism catalyzed by CYP3A4.
EE has been reported to be subject to significant gut and hepatic first-pass metabolism. Metabolism of EE and its oxidative metabolites occur primarily by conjugation with glucuronide or sulfate. CYP3A4 in the liver is responsible for the 2-hydroxylation which is the major oxidative reaction. The 2-hydroxy metabolite is further transformed by methylation and glucuronidation prior to urinary and fecal excretion.
DRSP serum concentrations are characterized by a terminal disposition phase half-life of approximately 30 hours after both single and multiple dose regimens. Excretion of DRSP was nearly complete after ten days and amounts excreted were slightly higher in feces compared to urine. DRSP was extensively metabolized and only trace amounts of unchanged DRSP were excreted in urine and feces. At least 20 different metabolites were observed in urine and feces. About 38 to 47% of the metabolites in urine were glucuronide and sulfate conjugates. In feces, about 17 to 20% of the metabolites were excreted as glucuronides and sulfates.
For EE the terminal disposition phase half-life has been reported to be approximately 24 hours. EE is not excreted unchanged. EE is excreted in the urine and feces as glucuronide and sulfate conjugates and undergoes enterohepatic circulation.
Safety and efficacy of drospirenone and ethinyl estradiol have been established in women of reproductive age. Efficacy is expected to be the same for postpubertal adolescents under the age of 18 and for users 18 years and older. Use of this product before menarche is not indicated.
Drospirenone and ethinyl estradiol have not been studied in postmenopausal women and is not indicated in this population.
No clinically significant difference was observed between the pharmacokinetics of DRSP or EE in Japanese versus Caucasian women (age 25 to 35) when 3mg DRSP/0.02 mg EE was administered daily for 21 days. Other ethnic groups have not been specifically studied.
Drospirenone and ethinyl estradiol are contraindicated in patients with renal impairment.
The effect of renal impairment on the pharmacokinetics of DRSP (3 mg daily for 14 days) and the effect of DRSP on serum potassium concentrations were investigated in three separate groups of female subjects (n=28, age 30 to 65) . All subjects were on a low potassium diet. During the study, 7 subjects continued the use of potassium sparing drugs for the treatment of their underlying illness. On the 14th day (steady-state) of DRSP treatment, the serum DRSP concentrations in the group with CLcr of 50 to 79 mL/min were comparable to those in the control group with CLcr ≥80 mL/min. The serum DRSP concentrations were on average 37% higher in the group with CLcr of 30 to 49 mL/min compared to those in the control group . DRSP treatment did not show any clinically significant effect on serum potassium concentration. Although hyperkalemia was not observed in the study, in five of the seven subjects who continued use of potassium-sparing drugs during the study, mean serum potassium concentrations increased by up to 0.33 mEq/L. [See CONTRAINDICATIONS ,and WARNINGS AND PRECAUTIONS]
Drospirenone and ethinyl estradiol are contraindicated in patients with hepatic disease.
The mean exposure to DRSP in women with moderate liver impairment is approximately three times higher than the exposure in women with normal liver function. Drospirenone and ethinyl estradiol have not been studied in women with severe hepatic impairment. [see CONTRAINDICATIONS, and WARNINGS AND PRECAUTIONS]
Consult the labeling of all concurrently used drugs to obtain further information about interactions with oral contraceptives or the potential for enzyme alterations.
Substances Diminishing The Efficacy Of COCs
Drugs or herbal products that induce certain enzymes, including CYP3A4, may decrease the effectiveness of COCs or increase breakthrough bleeding.
Substances Increasing The Plasma Concentrations Of COCs
Co-administration of atorvastatin and certain COCs containing ethinyl estradiol increase AUC values for ethinyl estradiol by approximately 20%. Ascorbic acid and acetaminophen may increase plasma ethinyl estradiol concentrations, possibly by inhibition of conjugation. In a clinical drug-drug interaction study conducted in 20 premenopausal women, co-administration of a DRSP (3 mg)/ ethinyl estradiol (0.02 mg) COC with the strong CYP3A4 inhibitor ketoconazole (200 mg twice daily) for 10 days increased the AUC(0-24h) of DRSP and ethinyl estradiol by 2.68-fold (90% CI: 2.44, 2.95) and 1.40-fold (90% CI: 1.31, 1.49), respectively. The increases in Cmax were 1.97-fold (90% CI: 1.79, 2.17) and 1.39-fold (90% CI: 1.28, 1.52) for DRSP and ethinyl estradiol, respectively. Although no clinically relevant effects on safety or laboratory parameters including serum potassium were observed, this study only assessed subjects for 10 days. The clinical impact for a patient taking a DRSP-containing COC concomitantly with chronic use of a CYP3A4/5 inhibitor is unknown [see WARNINGS AND PRECAUTIONS].
HIV/HCV Protease Inhibitors And Non-Nucleoside Reverse Transcriptase Inhibitors
Significant changes (increase or decrease) in the plasma concentrations of estrogen and progestin have been noted in some cases of co-administration with HIV/HCV protease inhibitors or with non-nucleoside reverse transcriptase inhibitors.
Antibiotics
There have been reports of pregnancy while taking hormonal contraceptives and antibiotics, but clinical pharmacokinetic studies have not shown consistent effects of antibiotics on plasma concentrations of synthetic steroids.
COCs containing ethinyl estradiol may inhibit the metabolism of other compounds. COCs have been shown to significantly decrease plasma concentrations of lamotrigine, likely due to induction of lamotrigine glucuronidation. This may reduce seizure control; therefore, dosage adjustments of lamotrigine may be necessary. Consult the labeling of the concurrently-used drug to obtain further information about interactions with COCs or the potential for enzyme alterations. In vitro, EE is a reversible inhibitor of CYP2C19, CYP1A1 and CYP1A2 as well as a mechanism-based inhibitor of CYP3A4/5, CYP2C8, and CYP2J2. Metabolism of DRSP and potential effects of DRSP on hepatic CYP enzymes have been investigated in in vitro and in vivo studies. In in vitro studies DRSP did not affect turnover of model substrates of CYP1A2 and CYP2D6, but had an inhibitory influence on the turnover of model substrates of CYP1A1, CYP2C9, CYP2C19 and CYP3A4, with CYP2C19 being the most sensitive enzyme. The potential effect of DRSP on CYP2C19 activity was investigated in a clinical pharmacokinetic study using omeprazole as a marker substrate. In the study with 24 postmenopausal women [including 12 women with homozygous (wild type) CYP2C19 genotype and 12 women with heterozygous CYP2C19 genotype] the daily oral administration of 3 mg DRSP for 14 days did not affect the oral clearance of omeprazole (40 mg, single oral dose) and the CYP2C19 product 5-hydroxy omeprazole. Furthermore, no significant effect of DRSP on the systemic clearance of the CYP3A4 product omeprazole sulfone was found. These results demonstrate that DRSP did not inhibit CYP2C19 and CYP3A4 in vivo.
Two additional clinical drug-drug interaction studies using simvastatin and midazolam as marker substrates for CYP3A4 were each performed in 24 healthy postmenopausal women. The results of these studies demonstrated that pharmacokinetics of the CYP3A4 substrates were not influenced by steady state DRSP concentrations achieved after administration of 3 mg DRSP/day.
Women on thyroid hormone replacement therapy may need increased doses of thyroid hormone because serum concentration of thyroid-binding globulin increases with use of COCs.
Interactions With Drugs That Have The Potential To Increase Serum Potassium Concentration
There is a potential for an increase in serum potassium concentration in women taking drospirenone and ethinyl estradiol with other drugs that may increase serum potassium concentration [see WARNINGS AND PRECAUTIONS].
A drug-drug interaction study of DRSP 3 mg/estradiol (E2) 1 mg versus placebo was performed in 24 mildly hypertensive postmenopausal women taking enalapril maleate 10 mg twice daily. Potassium concentrations were obtained every other day for a total of 2 weeks in all subjects. Mean serum potassium concentrations in the DRSP/E2 treatment group relative to baseline were 0.22 mEq/L higher than those in the placebo group. Serum potassium concentrations also were measured at multiple time points over 24 hours at baseline and on Day 14. On Day 14, the ratios for serum potassium Cmax and AUC in the DRSP/E2 group to those in the placebo group were 0.955 (90% CI: 0.914, 0.999) and 1.010 (90% CI: 0.944, 1.08), respectively. No patient in either treatment group developed hyperkalemia (serum potassium concentrations >5.5 mEq/L).
In the primary contraceptive efficacy study of drospirenone and ethinyl estradiol (3 mg DRSP/0.02 mg EE) of up to 1 year duration, 1,027 subjects were enrolled and completed 11,480 28-day cycles of use. The age range was 17 to 36 years. The racial demographic was: 87.8% Caucasian, 4.6% Hispanic, 4.3% Black, 1.2% Asian, and 2.1% other. Women with a BMI greater than 35 were excluded from the trial. The pregnancy rate (Pearl Index) was 1.41 (95% CI [0.73, 2.47]) per 100 woman-years of use based on 12 pregnancies that occurred after the onset of treatment and within 14 days after the last dose of drospirenone and ethinyl estradiol in women 35 years of age or younger during cycles in which no other form of contraception was used.
Two multicenter, double-blind, randomized, placebo-controlled studies were conducted to evaluate the effectiveness of drospirenone and ethinyl estradiol in treating the symptoms of PMDD. Women aged 18 to 42 who met DSM-IV criteria for PMDD, confirmed by prospective daily ratings of their symptoms, were enrolled. Both studies measured the treatment effect of drospirenone and ethinyl estradiol using the Daily Record of Severity of Problems scale, a patient-rated instrument that assesses the symptoms that constitute the DSM-IV diagnostic criteria. The primary study was a parallel group design that included 384 evaluable reproductive-aged women with PMDD who were randomly assigned to receive drospirenone and ethinyl estradiol or placebo treatment for 3 menstrual cycles. The supportive study, a crossover design, was terminated prematurely prior to achieving recruitment goals due to enrollment difficulties. A total of 64 women of reproductive age with PMDD were treated initially with drospirenone and ethinyl estradiol or placebo for up to 3 cycles followed by a washout cycle and then crossed over to the alternate medication for 3 cycles.
Efficacy was assessed in both studies by the change from baseline during treatment using a scoring system based on the first 21 items of the Daily Record of Severity of Problems. Each of the 21 items was rated on a scale from 1 (not at all) to 6 (extreme); thus a maximum score of 126 was possible. In both trials, women who received drospirenone and ethinyl estradiol had statistically significantly greater improvement in their Daily Record of Severity of Problems scores. In the primary study, the average decrease (improvement) from baseline was 37.5 points in women taking drospirenone and ethinyl estradiol, compared to 30.0 points in women taking placebo.
In two multicenter, double-blind, randomized, placebo-controlled studies, 889 subjects, ages 14 to 45 years, with moderate acne received drospirenone and ethinyl estradiol or placebo for six 28-day cycles. The primary efficacy endpoints were the percent change in inflammatory lesions, noninflammatory lesions, total lesions, and the percentage of subjects with a “clear” or “almost clear” rating on the Investigator's Static Global Assessment (ISGA) scale on day 15 of cycle 6, as presented in Table 3:
Table 3: Efficacy Results for Acne Trials*
| Study 1 | Study 2 | |||
| Drospirenone and Ethinyl Estradiol N=228 |
Placebo N=230 |
Drospirenone and Ethinyl Estradiol N=218 |
Placebo N=213 |
|
| ISGA Success Rate | 35 (15%) | 10 (4%) | 46 (21%) | 19 (9%) |
| Inflammatory Lesions | 33 | 33 | 32 | 32 |
| Mean Baseline Count Mean Absolute (%) Reduction | 15 (48%) | 11 (32%) | 16 (51%) | 11 (34%) |
| Non-inflammatory Lesions | 47 | 47 | 44 | 44 |
| Mean Baseline Count Mean Absolute (%) Reduction | 18 (39%) | 10 (18%) | 17 (42%) | 11 (26%) |
| Total lesions | 80 | 80 | 76 | 76 |
| Mean Baseline Count Mean Absolute (%) reduction | 33 (42%) | 21 (25%) | 33 (46%) | 22 (31%) |
| *Evaluated at day 15 of cycle 6, last observation carried forward for the Intent to treat population | ||||
Loryna™
(drospirenone and ethinyl estradiol tablets ) 3 mg/0.02 mg
WARNING TO WOMEN WHO SMOKE
Do not use drospirenone and ethinyl estradiol tablets if you smoke cigarettes and are over 35 years old. Smoking increases your risk of serious cardiovascular side effects (heart and blood vessel problems) from birth control pills, including death from heart attack, blood clots or stroke. This risk increases with age and the number of cigarettes you smoke.
Birth control pills help to lower the chances of becoming pregnant when taken as directed. They do not protect against HIV infection (AIDS) and other sexually transmitted diseases.
What is Loryna™ ?
Loryna™ is a birth control pill. It contains two female hormones, a synthetic estrogen called ethinyl estradiol and a progestin called drospirenone.
The progestin drospirenone may increase potassium. Therefore, you should not take Loryna™ if you have kidney, liver or adrenal disease because this could cause serious heart and health problems. Other drugs may also increase potassium. If you are currently on daily, long-term treatment for a chronic condition with any of the medications below, you should consult your healthcare provider about whether Loryna™ is right for you, and during the first month that you take Loryna™ , you should have a blood test to check your potassium level.
Loryna™ may also be taken to treat premenstrual dysphoric disorder (PMDD) if you choose to use the Pill for birth control. Unless you have already decided to use the Pill for birth control, you should not start Loryna™ to treat your PMDD because there are other medical therapies for PMDD that do not have the same risks as the Pill. PMDD is a mood disorder related to the menstrual cycle. PMDD significantly interferes with work or school, or with usual social activities and relationships with others. Symptoms include markedly depressed mood, anxiety or tension, mood swings, and persistent anger or irritability. Other features include decreased interest in usual activities, difficulty concentrating, lack of energy, change in appetite or sleep, and feeling out of control. Physical symptoms associated with PMDD may include breast tenderness, headache, joint and muscle pain, bloating and weight gain. These symptoms occur regularly before menstruation starts and go away within a few days following the start of the period. Diagnosis of PMDD should be made by healthcare providers.
You should only use Loryna™ for treatment of PMDD if you:
Loryna™ has not been shown to be effective for the treatment of premenstrual syndrome (PMS), a less serious set of symptoms occurring before menstruation. If you or your healthcare provider believe you have PMS, you should take Loryna™ only if you want to prevent pregnancy; and not for the treatment of PMS.
Loryna™ may also be taken to treat moderate acne if all of the following are true:
How Well Does Loryna™ Work?
Your chance of getting pregnant depends on how well you follow the directions for taking your birth control pills. The better you follow the directions, the less chance you have of getting pregnant.
Based on the results of one clinical study, 1 to 2 women out of 100 women, may get pregnant during the first year they use Loryna™ .
The following chart shows the chance of getting pregnant for women who use different methods of birth control. Each box on the chart contains a list of birth control methods that are similar in effectiveness. The most effective methods are at the top of the chart. The box on the bottom of the chart shows the chance of getting pregnant for women who do not use birth control and are trying to get pregnant.
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How Do I Take Loryna™ ?
1. Be sure to read these directions before you start taking your pills or anytime you are not sure what to do.
2. The right way to take the pill is to take one pill every day at the same time in the order directed on the package. Preferably, take the pill after the evening meal or at bedtime, with some liquid, as needed. Loryna™ can be taken without regard to meals.
If you miss pills you could get pregnant. This includes starting the pack late. The more pills you miss, the more likely you are to get pregnant. See “WHAT TO DO IF YOU MISS PILLS” below.
3. Many women have spotting or light bleeding at unexpected times, or may feel sick to their stomach during the first 1 to 3 packs of pills.
If you do have spotting or light bleeding or feel sick to your stomach, do not stop taking the pill. The problem will usually go away. If it does not go away, check with your healthcare provider.
4. Missing pills can also cause spotting or light bleeding, even when you make up these missed pills.
On the days you take two pills, to make up for missed pills, you could also feel a little sick to your stomach.
5. If you have vomiting (within 3 to 4 hours after you take your pill), you should follow the instructions for “WHAT TO DO IF YOU MISS PILLS.” If you have diarrhea or if you take certain medicines, including some antibiotics and some herbal products such as St. John's Wort, your pills may not work as well.
Use a back-up method (such as condoms and spermicides) until you check with your healthcare provider.
6. If you have trouble remembering to take the pill, talk to your healthcare provider about how to make pill-taking easier or about using another method of birth control.
7. If you have any questions or are unsure about the information in this leaflet, call your healthcare provider.
Before You Start Taking Your Pills
1. Decide What Time of Day You Want to Take Your Pill
It is important to take Loryna™ in the order directed on the package at the same time every day, preferably after the evening meal or at bedtime, with some liquid, as needed. Loryna™ can be taken without regard to meals.
2. Look at Your Pill Pack – It has 28 Pills
The Loryna™ -pill pack has 24 peach pills (with hormones) to be taken for 24 days, followed by 4 white pills (without hormones) to be taken for the next four days.
3. Also look for:
a) Where on the pack to start taking pills,
b) In what order to take the pills (follow the arrows)
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4. Be sure you have ready at all times (a) another kind of birth control (such as condoms and spermicides) to use as a back-up in case you miss pills, and (b) an extra, full pill pack.
When To Start the Firs t Pack of Pills
You have a choice for which day to start taking your first pack of pills. Decide with your healthcare provider which is the best day for you. Pick a time of day which will be easy to remember.
Day 1 Start:
1. Take the first peach pill of the pack during the first 24 hours of your period.
2. You will not need to use a back-up method of birth control, since you are starting the Pill at the beginning of your period. However, if you start Loryna™ later than the first day of your period, you should use another method of birth control (such as a condom and spermicide) as a back-up method until you have taken 7 peach pills.
Sunday Start:
1. Take the first peach pill of the pack on the Sunday after your period starts, even if you are still bleeding. If your period begins on Sunday, start the pack that same day.
2. Use another method of birth control (such as a condom and spermicide) as a back-up method if you have sex anytime from the Sunday you start your first pack until the next Sunday (7 days). This also applies if you start Loryna™ after having been pregnant, and you have not had a period since your pregnancy.
When You Switch From a Different Birth Control Pill
When switching from another birth control pill, Loryna™ should be started on the same day that a new pack of the previous birth control pill would have been started.
When You Switch From Another Type of Birth Control Method
When switching from a transdermal patch or vaginal ring, Loryna™ should be started when the next application would have been due. When switching from an injection, Loryna™ should be started when the next dose would have been due. When switching from an intrauterine contraceptive or an implant, Loryna™ should be started on the day of removal.
What to Do During the Month
1. Take one pill at the same time every day until the pack is empty.
Do not skip pills even if you are spotting or bleeding between monthly periods or feel sick to your stomach (nausea).
Do not skip pills even if you do not have sex very often.
2. When you finish a pack of pills, start the next pack on the day after your last white pill. Do not wait any days between packs.
What to Do if You Miss Pills
If you miss 1 peach pill of your pack:
1. Take it as soon as you remember. Take the next pill at your regular time. This means you may take two pills in one day.
2. You do not need to use a back-up birth control method if you have sex.
If you miss 2 peach pills in a row in Week 1 or Week 2 of your pack:
1. Take two pills on the day you remember and two pills the next day.
2. Then take one pill a day until you finish the pack.
3. You could become pregnant if you have sex in the 7 days after you restart your pills. You must use another birth control method (such as a condom and spermicide) as a back-up for those 7 days.
If you miss 2 peach pills in a row in Week 3 or Week 4 of your pack:
1. If you are a Day 1 Starter:
Throw out the rest of the pill pack and start a new pack that same day.
If you are a Sunday Starter:
Keep taking one pill every day until Sunday. On Sunday, throw out the rest of the pack and start a new pack of pills that same day.
2. You could become pregnant if you have sex in the 7 days after you restart your pills. You must use another birth control method (such as a condom and spermicide) as a back-up for those 7 days.
3. You may not have your period this month but this is expected. However, if you miss your period two months in a row, call your healthcare provider because you might be pregnant.
If you miss 3 or more peach pills in a row during any week:
1. If you are a Day 1 Starter:
Throw out the rest of the pill pack and start a new pack that same day.
If you are a Sunday Starter:
Keep taking 1 pill every day until Sunday. On Sunday, throw out the rest of the pack and start a new pack of pills that same day.
2. You could become pregnant if you have sex in the 7 days after you restart your pills. You must use another birth control method (such as condoms and spermicides) as a back-up for those 7 days.
3. Call your healthcare provider if you miss your period, because you might be pregnant.
If you miss any of the 4 white pills in Week 4:
Throw away the pills you missed.
Keep taking one pill each day until the pack is empty.
You do not need a back-up method.
Finally, if you are s till not sure what to do about the pills you have missed:
Use a back-up method (such as condoms and spermicides) anytime you have sex.
Contact your healthcare provider and continue taking one active peach pill each day until otherwise directed.
WHO SHOULD NOT TAKE LORYNA™ ?
Your healthcare provider will not give you Loryna™ if you:
Also, do not take birth control pills if you:
Birth control pills may not be a good choice for you if you have ever had jaundice (yellowing of the skin or eyes) caused by pregnancy (also called cholestasis of pregnancy).
Tell your healthcare provider if you have ever had any of the above conditions (your healthcare provider can recommend another method of birth control).
What Else Should I Know about Taking Loryna™ ?
Birth control pills do not protect you against any sexually transmitted disease, including HIV, the virus that causes AIDS.
Do not skip any pills, even if you do not have sex often.
If you miss a period, you could be pregnant. However, some women miss periods or have light periods on birth control pills, even when they are not pregnant. Contact your healthcare provider for advice if you:
Birth control pills should not be taken during pregnancy. However, birth control pills taken by accident during pregnancy are not known to cause birth defects.
You should stop Loryna™ at least four weeks before you have major surgery and not restart it until at least two weeks after the surgery due to an increased risk of blood clots.
If you are breastfeeding, consider another birth control method until you are ready to stop breastfeeding. Birth control pills that contain estrogen, like Loryna™ , may decrease the amount of milk you make. A small amount of the pill's hormones pass into breast milk.
If you have vomiting or diarrhea, your birth control pills may not work as well. Use another birth control method, like condoms and a spermicide, until you check with your healthcare provider.
If you are scheduled for any laboratory tests, tell your doctor you are taking birth-control pills. Certain blood tests may be affected by birth-control pills.
Tell your healthcare provider about all the medicines you take, including prescription and over thecounter medicines, vitamins and herbal supplements.
Loryna™ may affect the way other medicines work, and other medicines may affect how well Loryna™ works. Know the medicines you take.
Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine.
What are the Most Serious Risks of Taking Birth Control Pills ?
Like pregnancy, birth control pills increase the risk of serious blood clots (see following graph), especially in women who have other risk factors, such as smoking, obesity, or age greater than 35. This increased risk is highest when you first start taking birth control pills and when you restart the same or different birth control pills after not using them for a month or more. Women who use birth control pills with drospirenone (like Loryna™) may have a higher risk of getting a blood clot. Some studies reported that the risk of blood clots was higher for women who use birth control pills that contain drospirenone than for women who use birth control pills that do not contain drospirenone.
Talk with your healthcare provider about your risk of getting a blood clot before deciding which birth control pill is right for you.
It is possible to die or be permanently disabled from a problem caused by a blood clot, such as a heart attack or a stroke. Some examples of serious clots are blood clots in the:
To put the risk of developing a blood clot into perspective: If 10,000 women who are not pregnant and do not use birth control pills are followed for one year, between 1 and 5 of these women will develop a blood clot. The figure below shows the likelihood of developing a serious blood clot for women who are not pregnant and do not use birth control pills, for women who use birth control pills, for pregnant women, and for women in the first 12 weeks after delivering a baby.
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A few women who take birth control pills may get:
All of these events are uncommon in healthy women.
Call your healthcare provider right away if you have:
What are the Common Side Effects of Birth Control Pills ?
The most common side effects of birth control pills are:
These side effects are usually mild and usually disappear with time.
Less common side effects are:
This is not a complete list of possible side effects. Talk to your healthcare provider if you develop any side effects that concern you.
You may report side effects to the FDA at 1-800-FDA-1088.
No serious problems have been reported from a birth control pill overdose, even when accidentally taken by children.
Do Birth Control Pills Cause Cancer?
Birth control pills do not seem to cause breast cancer. However, if you have breast cancer now, or have had it in the past, do not use birth control pills because some breast cancers are sensitive to hormones.
Women who use birth control pills may have a slightly higher chance of getting cervical cancer. However, this may be due to other reasons such as having more sexual partners.
What Should I Know about My Period when Taking Loryna™ ?
Irregular vaginal bleeding or spotting may occur while you are taking Loryna™ . Irregular bleeding may vary from slight staining between menstrual periods to breakthrough bleeding, which is a flow much like a regular period. Irregular bleeding occurs most often during the first few months of oral contraceptive use, but may also occur after you have been taking the pill for some time. Such bleeding may be temporary and usually does not indicate any serious problems. It is important to continue taking your pills on schedule. If the bleeding occurs in more than one cycle, is unusually heavy, or lasts for more than a few days, call your healthcare provider.
Some women may not have a menstrual period but this should not be cause for alarm as long has you have taken the pills according to direction.
What if I Miss My Scheduled Period when Taking Loryna™?
It is not uncommon to miss your period. However, if you miss two periods in a row or miss one period when you have not taken your birth control pills according to directions, call your healthcare provider. Also notify your healthcare provider if you have symptoms of pregnancy such as morning sickness or unusual breast tenderness. It is important that your healthcare provider checks you to find out if you are pregnant. Stop taking Loryna™ if you are pregnant.
What If I Want to Become Pregnant?
You may stop taking the pill whenever you wish. Consider a visit with your healthcare provider for a pre-pregnancy checkup before you stop taking the pill.
General Advice about Loryna™ .
Your healthcare provider prescribed Loryna™ for you. Please do not share Loryna™ with anyone else. Keep Loryna™ out of the reach of children.
If you have concerns or questions, ask your healthcare provider. You may also ask your healthcare provider for a more detailed label written for medical professionals.
