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ATRIDOX (doxycycline hyclate) ®
(doxycycline hyclate) 10% in the ATRIGEL® Delivery System for controlled
release in subgingival application
DESCRIPTION
The ATRIDOX (doxycycline hyclate) ® product is a subgingival controlled-release product composed
of a two syringe mixing system. Syringe A contains 450 mg of the ATRIGEL®
Delivery System, which is a bioabsorbable, flowable polymeric formulation composed
of 36.7% poly(DLlactide) (PLA) dissolved in 63.3% N-methyl-2-pyrrolidone (NMP).
Syringe B contains 50 mg of doxycycline hyclate which is equivalent to 42.5
mg doxycycline. The constituted product is a pale yellow to yellow viscous liquid
with a concentration of 10% of doxycycline hyclate. Upon contact with the crevicular
fluid, the liquid product solidifies and then allows for controlled release
of drug for a period of 7 days. Doxycycline is a broad-spectrum antibiotic synthetically
derived from oxytetracycline.
The structural formula of doxycycline hyclate is:
Empirical Formula: (C22H24N2O8•HCI)2•C2H6O•H2O
Indications & Dosage
INDICATIONS
ATRIDOX (doxycycline hyclate) ® is indicated for use in the treatment of chronic adult periodontitis
for a gain in clinical attachment, reduction in probing depth, and reduction
in bleeding on probing.
DOSAGE AND ADMINISTRATION
ATRIDOX (doxycycline hyclate) ® is a variable dose product dependent on the size, shape, and number
of pockets being treated.
Preparation for Use
1. If refrigerated, remove the product from refrigeration at least 15 minutes
prior to mixing.
2. Couple Syringe A (liquid delivery system) and Syringe B (drug powder).
3. Inject the liquid contents of Syringe A (indicated by red stripe) into Syringe
B (doxycycline powder) and then push the contents back into Syringe A. This
entire operation is one mixing cycle.
4. Complete 100 mixing cycles at a pace of one cycle per second using brisk
strokes.
If immediate use is desired, skip to step 7.
5. If necessary, the coupled syringes can be stored at room temperature
for a maximum of three days. Some of the Atridox (doxycycline hyclate) systems are packaged in resealable
pouches that can be used for this purpose. If the Atridox (doxycycline hyclate) system is packaged
in a try, use an airtight container.
6. After storage, perform an additional ten mixing cycles just prior to use.
Continue with immediate use instructions.
7. The contents will be in Syringe A (indicated by red stripe). Hold
the coupled syringes vertically with Syringe A at the bottom. Pull back
on the Syringe A plunger and allow the contents to flow down the barrel for
several seconds.
8. Uncouple the two syringes and attach one of the provided cannulae to Syringe
A.
Product is now ready for application.
Product Administration
ATRIDOX (doxycycline hyclate) ® does not require local anesthesia for placement. Bend the
cannula to resemble a periodontal probe and explore the periodontal pocket in
a manner similar to periodontal probing. Keeping the cannula tip near the base
of the pocket, express the product into the pocket until the formulation reaches
the top of the gingival margin. Withdraw the cannula tip from the pocket. In
order to separate the tip from the formulation, turn the tip of the cannula
towards the tooth, press the tip against the tooth surface, and pinch the string
of formulation from the tip of the cannula. Variations on this technique may
be needed to achieve separation between ATRIDOX (doxycycline hyclate) ® and cannula.
If desired, using an appropriate dental instrument, ATRIDOX (doxycycline hyclate) ® may be packed
into the pocket. Dipping the edge of the instrument in water before packing
will help keep ATRIDOX (doxycycline hyclate) ® from sticking to the instrument, and will help speed coagulation of ATRIDOX (doxycycline hyclate) ®. A few drops of water dripped onto the surface of
ATRIDOX (doxycycline hyclate) ® once in the pocket will also aid in coagulation. If necessary,
add more ATRIDOX (doxycycline hyclate) ® as described above and pack it into the pocket until the
pocket is full.
Cover the pockets containing ATRIDOX (doxycycline hyclate) ® with either Coe-Pak™ periodontal
dressing or a cyanoacrylate dental adhesive.
Application of ATRIDOX (doxycycline hyclate) ® may be repeated four months after initial treatment.
HOW SUPPLIED
The final blended product is 500 mg of formulation containing 50 mg of doxycycline
hyclate (doxycycline hyclate, 10%).
ATRIDOX (doxycycline hyclate) ® is available as a tray or pouch containing a
doxycycline hyclate syringe (50 mg), an ATRIGEL® Delivery System syringe
(450 mg), and a blunt cannula. The pouched product is available in a box of
six (NDC 63646-191-00) a box of two (NDC63646-191-02), or a professional sample
pouch (NDC 63646-191-01). The trayed product is available in a box of six (NDC
63646-191-05), a box of four (NDC 63646-191-04), or a professional sample box
of two (NDC 63646-191-03).
Each ATRIDOX (doxycycline hyclate) ® syringe system is intended for use in only one patient. Do
not use if packaging has been previously opened or damaged.
Storage Conditions
Store at 2° - 30°C (36° - 86°F).
Manufactured by TOLMAR Inc. Fort Collins, CO 80526. Distributed by Zila Therapeutics,
Inc. Rev. 02/11.
QUESTION
What causes tooth decay?See Answer
Side Effects & Drug Interactions
SIDE EFFECTS
In clinical trials involving a total of 1436 patients, adverse experiences
from all causalities were monitored across treatment groups.
In the Circulatory System category, 10 subjects (1.6%) in the ATRIDOX (doxycycline hyclate) ®
group were reported as having “unspecified essential hypertension.”
Only 1 subject (0.2%) in the Vehicle group, and none in the Scaling and Root
Planing or Oral Hygiene groups were reported to have “unspecified essential
hypertension.” In all cases, the event occurred anywhere from 13 to 134
days post treatment. There is no known association of oral administration of
doxycycline with essential hypertension.
Two patients in the polymer vehicle group and none in the ATRIDOX (doxycycline hyclate) ® group
(0.2% for both groups combined) reported adverse events consistent with a localized
allergic response.
Sex, age, race and smoking status did not appear to be correlated with adverse
events.
The following table lists the incidence of treatment-emergent adverse events
from all causalities, across all treatment groups, occurring in ≥ 1% of the
entire study population.
Body System Verbatim Terms
Doxycycline
n=609
Vehicle
n=413
OH
n=204
SRP
n=210
Circulatory
High blood pressure
1.60%
0.20%
0.00%
0.00%
Digestive
Gum discomfort, pain or soreness; loss of attachment; increased
pocket depth
THE USE OF DRUGS OF THE TETRACYCLINE CLASS DURING TOOTH DEVELOPMENT (LAST HALF
OF PREGNANCY, INFANCY, AND CHILDHOOD TO THE AGE OF 8 YEARS) MAY CAUSE PERMANENT
DISCOLORATION OF THE TEETH. This adverse reaction is more common during long-term
use of the drugs, but has been observed following repeated short-term courses.
Enamel hypoplasia has also been reported. TETRACYCLINE DRUGS, THEREFORE, SHOULD
NOT BE USED IN THIS AGE GROUP, OR IN PREGNANT WOMEN, UNLESS OTHER DRUGS ARE
NOT LIKELY TO BE EFFECTIVE OR ARE CONTRAINDICATED.
Results of animal studies indicate that tetracyclines cross the placenta, are
found in fetal tissues, and can have toxic effects on the developing fetus (often
related to skeletal development). Evidence of embryotoxicity has also been noted
in animals treated early in pregnancy.
If any tetracycline is used during pregnancy, the patient should be apprised
of the potential hazard to the fetus. Photosensitivity manifested by an exaggerated
sunburn reaction has been observed in some individuals taking doxycycline or
other tetracyclines. Patients apt to be exposed to direct sunlight or ultraviolet
light should be advised that this reaction can occur with tetracycline drugs.
Precautions
PRECAUTIONS
General
ATRIDOX (doxycycline hyclate) ® has not been clinically tested in pregnant women.
ATRIDOX (doxycycline hyclate) ® has not been clinically evaluated in patients with conditions involving
extremely severe periodontal defects with very little remaining periodontium.
ATRIDOX (doxycycline hyclate) ® has not been clinically tested for use in the regeneration of alveolar
bone, either in preparation for or in conjunction with the placement of endosseous
(dental) implants or in the treatment of failing implants.
ATRIDOX (doxycycline hyclate) ® has not been clinically tested in immunocompromised patients (such
as patients immunocompromised by diabetes, chemotherapy, radiation therapy,
or infection with HIV).
As with other antibiotic preparations, ATRIDOX (doxycycline hyclate) ® therapy may result in overgrowth
of nonsusceptible organisms, including fungi.1 The effects of prolonged
treatment, greater than 6 months, have not been studied.
ATRIDOX (doxycycline hyclate) ® should be used with caution in patients with a history of or predisposition
to oral candidiasis. The safety and effectiveness of ATRIDOX (doxycycline hyclate) ® have not been
established for the treatment of periodontitis in patients with coexistent oral
candidiasis.
Carcinogenesis, Mutagenesis, Impairment of Fertility
Long-term studies in animals to evaluate carcinogenic potential of doxycycline
have not been conducted. However, there has been evidence of oncogenic activity
in rats in studies with the related antibiotics, oxytetracycline (adrenal and
pituitary tumors), and minocycline (thyroid tumors). Likewise, although mutagenicity
studies of doxycycline have not been conducted, positive results in in vitro
mammalian cell assays have been reported for related antibiotics (tetracycline,
oxytetracycline). Doxycycline administered orally at dosage levels as high as
250 mg/kg/day had no apparent effect on the fertility of female rats. Effect
on male fertility has not been studied.
Pregnancy Category D. See WARNINGS section
Nursing Mothers
Tetracyclines appear in breast milk following oral administration. It is not
known whether doxycycline is excreted in human milk following use of ATRIDOX (doxycycline hyclate) ® .
Because of the potential for serious adverse reactions in nursing infants from
doxycycline, a decision should be made whether to discontinue nursing or to
discontinue the drug, taking into account the importance of the drug to the
mother. (See WARNINGS section)
Pediatrics
The safety and effectiveness of ATRIDOX (doxycycline hyclate) ® in pediatric patients have not
been established. Oral doses of doxycycline in children up to 8 years of age
have caused permanent discoloration of teeth.
Overdosage & Contraindications
OVERDOSE
No information provided.
CONTRAINDICATIONS
ATRIDOX (doxycycline hyclate) ® should not be used in patients who are hypersensitive to doxycycline
or any other drug in the tetracycline class.
Clinical Pharmacology
CLINICAL PHARMACOLOGY
Microbiology
Doxycycline is a broad-spectrum semisynthetic tetracycline.1 Doxycycline
is bacteriostatic, inhibiting bacterial protein synthesis due to disruption
of transfer RNA and messenger RNA at ribosomal sites.1 In vitro testing
has shown that Porphyromonas gingivalis, Prevotella intermedia, Campylobacter
rectus, and Fusobacterium nucleatum, which are associated with periodontal
disease, are susceptible to doxycycline at concentrations ≤ 6.0 μg/mL.2
A single-center, single-blind, randomized, clinical study in 45 subjects with
periodontal disease demonstrated that a single treatment with ATRIDOX (doxycycline hyclate) ® resulted
in the reduction in the numbers of P. gingivalis, P. intermedia, C. rectus,
F. nucleatum, Bacteroides forsythus, and E. corrodens in subgingival
plaque samples. Levels of aerobic and anaerobic bacteria were also reduced after
treatment with ATRIDOX (doxycycline hyclate) ®. The clinical significance of these findings, however,
is not known. During these studies, no overgrowth of opportunistic organisms
such as Gram-negative bacilli and yeast were observed. However, as with other
antibiotic preparations, ATRIDOX (doxycycline hyclate) ® therapy may result in the overgrowth of
nonsusceptible organisms including fungi. (See PRECAUTIONS)
Pharmacokinetics
In a clinical pharmacokinetic study, subjects were randomized to receive either
ATRIDOX (doxycycline hyclate) ® covered with Coe-Pak™ periodontal dressing (n=13), ATRIDOX (doxycycline hyclate) ®
covered with Octyldent™ periodontal adhesive (n=13), or oral doxycycline
(n=5) (according to package dosing instructions). The doxycycline release characteristics
in gingival crevicular fluid (GCF), saliva, and serum were evaluated.
Doxycycline levels in GCF peaked (~1,500 μg/mL and ~2000 μg/mL for Coe-Pak™
and Octyldent™ groups, respectively) 2 hours following treatment with
ATRIDOX (doxycycline hyclate) ®. These levels remained above 1000 μg/mL through 18 hours, at
which time the levels began to decline gradually. However, local levels of doxycycline
remained well above the minimum inhibitory concentration (MIC90) for periodontal
pathogens ( ≤ 6.0 μg/mL)2 through Day 7. In contrast, subjects
receiving oral doxycycline had peak GCF levels of ~2.5 μg/mL at 12 hours
following the initial oral dosing with levels declining to ~0.2 μg/mL by
Day 7. High variability was observed for doxycycline levels in GCF for both
oral and ATRIDOX (doxycycline hyclate) ® treatment groups.
The ATRIDOX (doxycycline hyclate) ® doxycycline release profile in GCF is illustrated in the figure
below.
The maximum concentration of doxycycline in saliva was achieved at 2 hours
after both treatments with ATRIDOX (doxycycline hyclate) ®, with means of 4.05 μg/mL and 8.78
μg/mL and decreased to 0.36 μg/mL and 0.23 μg/mL at Day 7 for the Coe-Pak™
group and the Octyldent™ group, respectively.
The concentration of doxycycline in serum following treatment of ATRIDOX (doxycycline hyclate) ®
never exceeded 0.1 μg/mL.
Clinical Studies
In two well-controlled, multicenter, parallel-design, nine-month clinical trials,
831 patients (Study 1=411; Study 2=420) with chronic adult periodontitis characterized
by a mean probing depth of 5.9 to 6.0 mm were enrolled. Subjects received one
of four treatments: 1) ATRIDOX (doxycycline hyclate) ®, 2) Scaling and Root Planing, 3) Vehicle
Control, or 4) Oral Hygiene. Treatment was administered to sites with probing
depths 5 mm or greater that bled on probing. Subjects with detectable subgingival
calculus on greater than 80% of all tooth surfaces were excluded from enrollment.
All subjects received a second administration of the initially randomized treatment
four months after their Baseline treatment. Changes in the efficacy parameters,
attachment level, pocket depth, and bleeding on probing, between Baseline and
Month 9 showed that: 1) ATRIDOX (doxycycline hyclate) ® was superior to Vehicle Control and Oral
Hygiene, and 2) ATRIDOX (doxycycline hyclate) ® met the decision rule of being at least 75% as
good as Scaling and Root Planing (SRP) (the standard of at least 75% as good
as SRP is required for any product approved as a stand alone therapy for periodontitis).
Clinicians should note that the studies were of nine months duration. Additional
research would be necessary to establish long term comparability to SRP. The
results of Studies #1 and 2 for efficacy parameters of attachment level gain
and probing depth reduction are included in the following graphs.
* denotes statistically significant superiority of ATRIDOX (doxycycline hyclate) ® and Sc/RP vs.
Vehicle and Oral Hygiene
† denotes statistically significant superiority of ATRIDOX (doxycycline hyclate) ® vs. Vehicle
and Oral Hygiene
Data were not collected at months 3 and 7
* denotes statistically significant superiority of ATRIDOX (doxycycline hyclate) ® and Sc/RP vs.
Vehicle and Oral Hygiene
† denotes statistically significant superiority of ATRIDOX (doxycycline hyclate) ® vs. Vehicle
and Oral Hygiene
Data were not collected at months 3 and 7
A third clinical trial was conducted to determine whether the product can be
left in the pocket to bioabsorb or be expelled naturally and achieve comparable
clinical results. In this study the product was retained with Octyldent™
dental adhesive rather than Coe-Pak™ periodontal dressing as in the previously
mentioned studies. This was a 3-arm, randomized, controlled, parallel group,
single blind trial that enrolled 605 subjects. The patient population studied
and study design were comparable to that in Studies 1 and 2. Subjects received
one of three treatments: 1) ATRIDOX (doxycycline hyclate) ® with Coe-Pak™ removed after 7
days as in the pivotal trials, 2) ATRIDOX (doxycycline hyclate) ® retained with Octyldent™
and left to bioabsorb or be expelled naturally or 3) Vehicle Control with Octyldent™
left to bioabsorb or be expelled naturally. Changes in the efficacy parameters,
attachment level, pocket depth and bleeding on probing were equivalent to those
observed in Studies 1 and 2. The results of the third study support the use
of ATRIDOX (doxycycline hyclate) ® retained with Octyldent™ and left to bioabsorb or be expelled
naturally.
REFERENCES
1. Stratton CW, Lorian V. Mechanisms of action for antimicrobial
agents: general principles and mechanisms for selected classes of antibiotics.
Antibiotics in Laboratory Medicine, 4th edition, Williams and Wilkins, Baltimore,
MD, 1996.
2. Slots J, Rams TE. Antibiotics in periodontal therapy: advantages
and disadvantages. J Clin Periodontol 1990; 17:479-493.
Medication Guide
PATIENT INFORMATION
Mechanical oral hygiene procedures (i.e., tooth brushing, flossing) should
be avoided on any treated areas for 7 days.
Avoid excessive sunlight or artificial ultraviolet light while receiving doxycycline.
Doxycycline may decrease the effectiveness of birth control pills.