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FABIOR (tazarotene) Foam, 0.1% contains the compound tazarotene, a member of the acetylenic class of retinoids. It is for topical use only.
Chemically, tazarotene is ethyl 6-[(4,4-dimethylthiochroman-6-yl)ethynyl]nicotinate. The structural formula is represented below:
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Tazarotene is a pale yellow to yellow substance. FABIOR Foam contains tazarotene, 1 mg/g, in aqueous-based white to off-white foam vehicle consisting of butylated hydroxytoluene, ceteareth-12, citric acid anhydrous, diisopropyl adipate, light mineral oil, potassium citrate monohydrate, potassium sorbate, purified water, and sorbic acid. FABIOR Foam is dispensed from an aluminum can pressurized with a hydrocarbon (propane/n-butane/isobutane) propellant.
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared with rates in the clinical trials of another drug and may not reflect the rates observed in practice.
The safety data reflect exposure to FABIOR Foam in 744 subjects with acne vulgaris. Subjects were aged 12 to 45 years and were treated once daily in the evening for 12 weeks. Adverse reactions reported in ≥ 1% of subjects treated with FABIOR Foam are presented in Table 1. Most adverse reactions were mild to moderate in severity. Severe adverse reactions represented 3.0% of the subjects treated. Overall, 2.7% (20/744) of subjects discontinued FABIOR Foam because of local skin reactions.
Table 1: Incidence of Adverse Reactions in ≥1 % of Subjects Treated with FABIOR Foam
|
FABIOR Foam |
Vehicle Foam |
|
|
Patients with any adverse reaction, n (%) |
163 (22) |
19 (3) |
|
Application site irritation |
107 (14) |
9 (1) |
|
Application site dryness |
50 (7) |
8 (1) |
|
Application site erythema |
48 (6) |
3 (<1) |
|
Application site exfoliation |
44 (6) |
3 (<1) |
|
Application site pain |
9 (1) |
0 |
|
Application site photosensitivity (including sunburn) |
8 (1) |
3 (<1) |
|
Application site pruritus |
7 (1) |
3 (<1) |
|
Application site dermatitis |
6 (1) |
1 (<1) |
Additional adverse reactions that were reported in <1% of subjects treated with FABIOR Foam included application site reactions (including discoloration, discomfort, edema, rash, and swelling), dermatitis, impetigo, and pruritus.
Local skin reactions, dryness, erythema, and peeling actively assessed by the investigator and burning/stinging and itching reported by the subject were evaluated at baseline, during treatment, and end of treatment. During the 12 weeks of treatment, each local skin reaction peaked at Week 2 and gradually reduced thereafter with the continued use of FABIOR Foam.
No formal drug-drug interaction studies were conducted with FABIOR Foam.
Concomitant dermatologic medications and cosmetics that have a strong drying effect should be avoided. It is recommended to postpone treatment until the effects of these products subside before use of FABIOR Foam is started.
Concomitant use with oxidizing agents, such as benzoyl peroxide, may cause degradation of tazarotene and may reduce the clinical efficacy of tazarotene. If combination therapy is required, they should be applied at different times of the day (e.g., one in the morning and the other in the evening).
The impact of tazarotene on the pharmacokinetics of progestin-only oral contraceptives (i.e., minipills) has not been evaluated.
In a trial of 27 healthy female subjects between the ages of 20 to 55 years receiving a combination oral contraceptive tablet containing 1 mg norethindrone and 35 mcg ethinyl estradiol, concomitant use of tazarotene did not affect the pharmacokinetics of norethindrone and ethinyl estradiol over a complete cycle.
Included as part of the PRECAUTIONS section.
Systemic exposure to tazarotenic acid is dependent upon the extent of the body surface area treated. In patients treated topically over sufficient body surface area, exposure could be in the same order of magnitude as in orally treated animals.
Tazarotene is a teratogenic substance, and it is not known what level of exposure is required for teratogenicity in humans [see Clinical Pharmacology (12)].
There were 5 reported pregnancies in subjects who participated in clinical trials for topical tazarotene foam. One of the subjects was found to have been treated with topical tazarotene for 25 days, 2 were treated with vehicle foam, and the other 2 did not receive either tazarotene foam or vehicle foam. The subjects were discontinued from the trials when their pregnancy was reported. The one pregnant woman who was inadvertently exposed to topical tazarotene during the clinical trial delivered a full-term healthy infant.
Females of Childbearing Potential:
Females of child-bearing potential should be warned of the potential risk and use adequate birth-control measures when tazarotene foam is used. The possibility of pregnancy should be considered in females of child-bearing potential at the time of institution of therapy.
A negative serum or urine result for pregnancy test having a sensitivity down to at least 25 mIU/mL for human chorionic gonadotropin (hCG) should be obtained within 2 weeks prior to therapy with FABIOR Foam, which should begin during a normal menstrual period for females of childbearing potential. Advise patients of the need to use an effective method of contraception to avoid pregnancy [see Use in Specific Populations (8.1)].
FABIOR Foam should be used with caution in patients with a history of local tolerability reactions or local hypersensitivity. Retinoids should not be used on abraded or eczematous skin, as they may cause severe irritation. Contact with the mouth, eyes, and mucous membranes should be avoided. In case of accidental contact, rinse well with water.
Some individuals may experience skin redness, peeling, burning or excessive pruritus. If these effects occur, the medication should either be discontinued until the integrity of the skin is restored, or the dosing should be reduced to an interval the patient can tolerate. However, efficacy at reduced frequency of application has not been established.
Weather extremes, such as wind or cold, may be more irritating to patients using FABIOR Foam.
Concomitant topical acne therapy should be used with caution because a cumulative irritant effect may occur. If irritancy or dermatitis occurs, reduce frequency of application or temporarily interrupt treatment and resume once the irritation subsides. Treatment should be discontinued if the irritation persists.
Because of heightened burning susceptibility, exposure to sunlight (including sunlamps) should be avoided. Patients must be warned to use sunscreens and protective clothing when using FABIOR Foam. Patients with sunburn should be advised not to use FABIOR Foam until fully recovered. Patients who may have considerable sun exposure due to their occupation and those patients with inherent sensitivity to sunlight should exercise particular caution when using FABIOR Foam and ensure that the precautions are observed [see FDA-approved patient labeling]. Due to the potential for photosensitivity resulting in greater risk for sunburn, FABIOR Foam should be used with caution in patients with a personal or family history of skin cancer.
FABIOR Foam should be administered with caution if the patient is also taking drugs known to be photosensitizers (e.g., thiazides, tetracyclines, fluoroquinolones, phenothiazines, sulfonamides) because of the increased possibility of augmented photosensitivity.
The propellant in FABIOR Foam is flammable. Instruct the patient to avoid fire, flame, and/or smoking during and immediately following application.
A long-term study of tazarotene following oral administration of 0.025, 0.050, and 0.125 mg/kg/day to rats showed no indications of increased carcinogenic risk. Based on pharmacokinetic data from a shorter-term study in rats, the highest dose of 0.125 mg/kg/day was anticipated to give systemic exposure in rats approximately 2 times the AUC in acne patients treated with 2 mg/cm2 of FABIOR Foam 0.1% over a 15% body surface area.
A long-term topical application study of up to 0.1% tazarotene in a gel formulation in mice terminated at 88 weeks showed that dose levels of 0.05, 0.125, 0.25, and 1 mg/kg/day (reduced to 0.5 mg/kg/day for males after 41 weeks due to severe dermal irritation) revealed no apparent carcinogenic effects when compared with vehicle control animals. AUC at the highest dose in mice was 49 times the AUC in acne patients treated with 2 mg/cm2 of FABIOR Foam 0.1% over a 15% body surface area.
In evaluation of photocarcinogenicity, median time to onset of tumors was decreased and the number of tumors increased in hairless mice following chronic topical dosing with exposure to ultraviolet radiation at tazarotene concentrations of 0.001%, 0.005%, and 0.01% in a gel formulation for up to 40 weeks.
Tazarotene was non-mutagenic in the Ames assay and did not produce structural chromosomal aberrations in a human lymphocyte assay. Tazarotene was non- mutagenic in the CHO/HGPRT mammalian cell forward gene mutation assay and was non-clastogenic in the in vivo mouse micronucleus test.
No impairment of fertility was observed in rats when male animals were treated for 70 days prior to mating and female animals were treated for 14 days prior to mating and continuing through gestation and lactation with topical doses of tazarotene gel up to
0.125 mg/kg/day. Based on data from another study, the systemic drug exposure at the 0.125 mg/kg/day dose in rats would be equivalent to 7.6 times the AUC in acne patients treated with 2 mg/cm2 of FABIOR Foam 0.1% over a 15% body surface area.
No impairment of mating performance or fertility was observed in male rats treated for 70 days prior to mating with oral doses of up to 1 mg/kg/day tazarotene. AUC at the highest dose in rats was 23 times the AUC in acne patients treated with 2 mg/cm2 of FABIOR Foam 0.1% over a 15% body surface area.
No effect on parameters of mating performance or fertility was observed in female rats treated for 15 days prior to mating and continuing through gestation day 7 with oral doses of tazarotene up to 2 mg/kg/day. However, there was a significant decrease in the number of estrous stages and an increase in developmental effects at that dose [see Pregnancy (8.1)]. AUC at the highest dose in rats was 42 times the AUC in acne patients treated with 2 mg/cm2 of FABIOR Foam 0.1% over a 15% body surface area.
Reproductive capabilities of F1 animals, including F2 survival and development, were not affected by topical administration of tazarotene gel to female F0 parental rats from gestation day 16 through lactation day 20 at the maximum tolerated dose of 0.125 mg/kg/day. Based on data from another study, the AUC in rats would be equivalent to
7.6 times the AUC in acne patients treated with 2 mg/cm2 of FABIOR Foam 0.1% over a 15% body surface area.
See FDA-approved patient labeling (Patient Information). Inform the patient of the following:
FABIOR is a registered trademark of Mayne Pharma LLC.
© 2016 Mayne Pharma All rights reserved.
Distributed by:
Mayne Pharma
Raleigh, NC 27609
141298
Excessive topical application of FABIOR Foam may lead to marked redness, peeling, or discomfort. [see Warnings and Precautions (5.2)]. Management of accidental ingestion or excessive application to the skin should be as clinically indicated.
FABIOR Foam is contraindicated in pregnancy.
FABIOR Foam may cause fetal harm when administered to a pregnant woman. Tazarotene elicits teratogenic and developmental effects associated with retinoids after topical or systemic administration in rats and rabbits [see Use in Specific Populations (8.1)].
If this drug is used during pregnancy, or if the patient becomes pregnant while taking this drug, treatment should be discontinued and the patient apprised of the potential hazard to the fetus [see Warnings and Precautions (5.1), Use in Specific Populations (8.1)].
Tazarotene is a retinoid prodrug that is converted to its active form, the cognate carboxylic acid of tazarotene, by rapid deesterification in animals and man. Tazarotenic acid binds to all 3 members of the retinoic acid receptor (RAR) family: RARα, RARβ, and RARγ but shows relative selectivity for RARβ and RARγ and may modify gene expression. The clinical significance of these findings is unknown.
The mechanism of tazarotene action in acne vulgaris is not defined. However, the basis of tazarotene's therapeutic effect in acne may be due to its anti-hyperproliferative, normalizing-of-differentiation and anti-inflammatory effects. Tazarotene inhibited corneocyte accumulation in rhino mouse skin and cross- linked envelope formation in cultured human keratinocytes. The clinical significance of these findings is unknown.
The pharmacodynamics of FABIOR Foam are unknown.
Following topical application, tazarotene undergoes esterase hydrolysis to form its active metabolite, tazarotenic acid. Tazarotenic acid was highly bound to plasma proteins (greater than 99%). Tazarotene and tazarotenic acid were metabolized to sulfoxides, sulfones, and other polar metabolites which were eliminated through urinary and fecal pathways.
Systemic exposure following topical application of FABIOR Foam 0.1% was evaluated in one trial. Patients aged 15 years and older with moderate-to-severe acne applied approximately 3.7 grams of FABIOR Foam 0.1% (N = 13) to approximately 15% body surface area (face, upper chest, upper back, and shoulders) once daily for 22 days. On Day 22, the mean (±SD) tazarotenic acid Cmax was 0.43 (±0.19) ng/mL, the AUC0-24h was 6.98 (±3.56) ng∙h/mL, and the half-life was 21.7 (±15.7) hours. The median Tmax was 6 hours (range: 4.4 to 12 hours). The AUC0-24h for tazarotenic acid was approximately 50-fold higher compared with the parent compound tazarotene. The mean (±SD) half-life of tazarotene was 8.1 (±3.7) hours.
Accumulation was observed upon repeated once-daily dosing as the tazarotenic acid predose concentrations were measurable in the majority of subjects. Steady state was attained within 22 days of daily application. Once-daily dosing resulted in little to no accumulation of tazarotene as predose concentrations were mostly below the quantitation limit throughout the study.
INSTRUCTIONS FOR USE
FABIOR tazarotene aerosol,
foam Mayne Pharma
1. Shake the FABIOR Foam can before use.
2. Remove cap from can. See Figure A.
 |
Figure A
3. Hold the FABIOR Foam can upright at a slight angle and press the nozzle. See Figure B.
 |
Figure B
4. Dispense a small amount of FABIOR Foam into the palm of your hand. See Figure C.
 |
Figure C
Use the fingertips of your other hand to apply enough FABIOR Foam to cover the affected area with a thin Gently rub the foam into the affected area until it disappears into the skin. See Figure D.
 |
Figure D
Wash hands after applying FABIOR Foam. See Figure E.
 |
Figure E
Avoid getting FABIOR Foam in your eyes, mouth, or vagina.
What should I avoid while using FABIOR Foam?
What are the possible side effects of FABIOR Foam?
FABIOR Foam may harm your unborn baby, if used during pregnancy.
The most common side effects of FABIOR Foam are:
Sometimes these symptoms can become severe and may be uncomfortable. Tell your doctor if these side effects become uncomfortable for you. Your doctor may tell you to stop using FABIOR Foam until your skin heals and your symptoms improve, or to use FABIOR Foam less often to help you tolerate it better.
These are not all the possible side effects of FABIOR Foam. For more information, ask your doctor or pharmacist.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800- FDA-1088.
You may also report side effects to Mayne Pharma at 1-844-825-8500.
How should I s tore FABIOR Foam?
Keep FABIOR Foam and a l medicines out of the reach of children. General Information about FABIOR Foam
Medicines are sometimes prescribed for purposes other than those listed in Patient Information leaflets. Do not use FABIOR Foam for a condition for which it was not prescribed. Do not give FABIOR Foam to other people even if they have the same symptoms that you have. It may harm them.
This Patient Information leaflet summarizes the most important information about FABIOR Foam. If you would like more information, talk with your doctor. You can ask your doctor or pharmacist for information about FABIOR Foam that is written for health professionals.
What are the ingredients in FABIOR Foam?
Active ingredient: tazarotene
Inactive ingredients: butylated hydroxytoluene, ceteareth-12, citric acid anhydrous, diisopropyl adipate, light mineral oil, potassium citrate monohydrate, potassium sorbate, purified water, and sorbic acid. The foam is dispensed from an aluminum can pressurized with a hydrocarbon (propane/n-butane/isobutane) propellant.
This Patient Information has been approved by the U.S. Food and Drug Administration FABIOR is a registered trademark of Mayne Pharma LLC.
© 2016 Mayne Pharma. All rights reserved.
Distributed by:
Mayne Pharma
Raleigh, NC 27609
02/2023
