Seysara (Page 2 of 4)

7.2 Effect of SEYSARA on Other Drugs


Similar to other tetracyclines, SEYSARA may interfere with the bactericidal action of penicillin. Avoid coadministration of SEYSARA with penicillin.


Similar to other tetracyclines, SEYSARA may depress plasma prothrombin activity, which may increase the risk of bleeding in patients who are on anticoagulant therapy. Decrease anticoagulant dosage when coadministered with SEYSARA as appropriate.

P-Glycoprotein (P-gp) Substrates

Concomitant use of SEYSARA may increase concentrations of concomitantly administered P-gp substrates (e.g. digoxin). Monitor for toxicities of drugs that are P-gp substrates and may require dosage reduction when given concurrently with SEYSARA [see Clinical Pharmacology (12.3)].

Oral Hormonal Contraceptives

There is no clinically significant effect of SEYSARA on the efficacy of oral contraceptives containing ethinyl estradiol and norethindrone acetate [see Clinical Pharmacology (12.3)].


8.1 Pregnancy

Risk Summary

SEYSARA, like tetracycline class drugs, may cause fetal harm, permanent discoloration of teeth, and reversible inhibition of bone growth when administered during pregnancy [see Warnings and Precautions (5.1) and Use in Specific Populations (8.4)]. The limited available human data are not sufficient to inform a drug-associated risk for birth defects or miscarriage. Tetracyclines are known to cross the placental barrier; therefore, SEYSARA may be transmitted from the mother to the developing fetus. In animal reproduction studies, sarecycline induced skeletal malformations in fetuses when orally administered to pregnant rats during the period of organogenesis at a dose 1.4 times the maximum recommended human dose (MRHD) of 150 mg/day (based on AUC comparison). When dosing with sarecycline continued through the period of lactation, decreases in offspring survival, offspring body weight, and implantation sites and viable embryos in offspring females occurred at a dose 3 times the MRHD (based on AUC comparison) [see Data]. The potential risk to the fetus outweighs the potential benefit to the mother from SEYSARA use during pregnancy; therefore, pregnant patients should discontinue SEYSARA as soon as pregnancy is recognized.

All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively.


Animal Data

In an embryofetal developmental study in rats, sarecycline was administered to pregnant rats at oral doses up to 500 mg/kg/day during the period of organogenesis. Decreases in maternal body weight, fetal body weight and litter size and increases in the number of resorption and postimplantation loss occurred at 500 mg/kg/day (7 times the MRHD based on AUC comparison). Skeletal malformations (bent forelimb, hindlimb, and scapula) occurred at all dose levels (≥ 50 mg/kg/day, 1.4 times the MRHD based on AUC comparison).

In an embryofetal developmental study in rabbits, sarecycline was administered to pregnant rabbits at oral doses up to 150 mg/kg/day during the period of organogenesis. Excessive maternal toxicity (mortality/moribundity/abortion) occurred at 150 mg/kg/day (5 times the MRHD based on AUC comparison) and this dose group was terminated early. Maternal moribundity also occurred at 100 mg/kg/day (0.6 times the MRHD based on AUC comparison). No significant embryofetal toxicity or malformations were observed at doses up to 100 mg/kg/day (0.6 times the MRHD based on AUC comparison).

In a pre- and post-natal developmental study in rats, sarecycline was administered to maternal rats at oral doses up to 400 mg/kg/day during the period of organogenesis through lactation. Excessive litter toxicity (litter loss and stillbirth) occurred at 400 mg/kg/day (8 times the MRHD based on AUC comparison), which led to early termination of dams at parturition. Decreases in body weight and food consumption of dams during the lactation period occurred at 150 mg/kg/day (3 times the MRHD based on AUC comparison). Decreases in offspring survival and offspring body weight during the preweaning and growth period, and decreases in implantation sites and viable embryos in female offspring occurred at 150 mg/kg/day (3 times the MRHD based on AUC comparison). No significant maternal or developmental toxicity was observed at 50 mg/kg/day (1.4 times the MRHD based on AUC comparison).

8.2 Lactation

Risk Summary

Tetracyclines are excreted in human milk. Because of the potential for serious adverse reactions on bone and tooth development in nursing infants from tetracycline-class antibiotics, advise a woman that breastfeeding is not recommended with SEYSARA therapy [see Warnings and Precautions (5.1)].

8.3 Females and Males of Reproductive Potential


Avoid using SEYSARA in males who are attempting to conceive a child. In a fertility study in rats, sarecycline adversely affected spermatogenesis when orally administered to male rats at a dose 8 times the MRHD (based on AUC comparison) [see Nonclinical Toxicology (13.1)].

8.4 Pediatric Use

The safety and effectiveness of SEYSARA have been established in pediatric patients 9 years of age and older for the treatment of moderate to severe inflammatory lesions of non-nodular acne vulgaris [see Pharmacokinetics (12.3) and Clinical Studies (14)].

Safety and effectiveness of SEYSARA in pediatric patients below the age of 9 years has not been established. Use of tetracycline-class antibiotics below the age of 8 is not recommended due to the potential for tooth discoloration [see Warnings and Precautions (5.1)].

8.5 Geriatric Use

Clinical studies of SEYSARA did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects.


In case of overdosage, discontinue medication, treat symptomatically, and institute supportive measures. Dialysis does not alter serum half-life and thus would not be of benefit in treating cases of overdose.


SEYSARA (sarecycline) tablets are a tetracycline class drug for oral administration. Sarecycline hydrochloride is chemically described as (4S ,4aS ,5aR ,12aS)-4-(dimethylamino)-3,10,12,12a-tetrahydroxy-7-[(methoxy-(methyl)-amino)- methyl]-1,11-dioxo-1,4,4a,5,5a,6,11, 12a-octahydrotetracene-2-carboxamide monohydrochloride with an empirical formula of C24 H29 N3 O8 .HCl and a molecular weight of 523.96.

The structural formula is represented below:

Chemical Structure
(click image for full-size original)

SEYSARA tablets contain 64.5 mg, 107.5 mg, and 161.2 mg of sarecycline hydrochloride equivalent to 60 mg, 100 mg, and 150 mg sarecycline respectively. Inactive ingredients in the tablet formulations are: microcrystalline cellulose, povidone, sodium starch glycolate, and sodium stearyl fumarate. The yellow film coating contains D&C yellow #10 aluminum lake, iron oxide yellow, methacrylic acid copolymer type C, polyethylene glycol, polyvinyl alcohol, sodium bicarbonate, talc, and titatnium dioxide.


12.1 Mechanism of Action

The mechanism of action of SEYSARA in treating acne vulgaris is not known.

12.2 Pharmacodynamics

The pharmacodynamics of SEYSARA for the treatment of acne vulgaris are unknown.

Cardiac Electrophysiology

At approximately 3 times the maximum recommended dose, SEYSARA did not prolong the QT interval to a clinically relevant extent.

12.3 Pharmacokinetics

Increasing the SEYSARA dose from 60 to 150 mg once daily in healthy subjects resulted in a slightly less than proportional increase in sarcyeline steady-state Cmax and AUCtau . A mean accumulation ratio of sarecycline ranges from 1.5 to 1.6 fold with repeated dosing. Steady-state of sarecycline was reached by Day 7.


The median time to peak plasma concentration (Tmax ) of sarecycline is 1.5 to 2.0 hours.

Effect of Food

Coadministration with a high-fat (approximately 50% of total caloric content of the meal), high-calorie (800 to 1000 Kcal) meal that included milk delayed Tmax by approximately 0.53 hour and decreased sarecycline Cmax by 31% and AUC by 27%.


Protein binding of sarecycline is 62.5% to 74.7% in vitro. The mean apparent volume of distribution of sarecycline at steady-state ranges from 91.4 L to 97.0 L.


The mean apparent oral clearance (CL/F) of sarecycline at steady state is approximately 3 L/h. The mean elimination half-life of sarecycline is 21 to 22 hours.


Metabolism of sarecycline by enzymes in human liver microsomes is minimal (< 15%) in vitro. Minor metabolites resulting from non-enzymic epimerization, O-/N-demethylation, hydroxylation, and desaturation have been found.


After a single 100 mg oral dose of radiolabeled sarecycline, 42.6% of the dose was recovered in feces (14.9% as unchanged) and 44.1% in urine (24.7% as unchanged).

Specific Populations

No clinically significant differences in the pharmacokinetics of sarecycline were observed based on age (11 to 73 years), weight (42 to 133 kg), sex, renal impairment, or mild to moderate hepatic impairment (Child Pugh A to B). The effect of end-stage renal disease (ESRD) or severe hepatic impairment (Child-Pugh C) on sarecycline pharmacokinetics has not been assessed.

Drug Interaction Studies

Clinical Studies

Coadministration of SEYSARA with a combination oral contraceptive, ethinyl estradiol (EE) 20 mcg plus norethindrone (NE) acetate 1 mg, increased EE Cmax by 14% and AUCtau by 11%, and increased NE Cmax by 18% and AUCtau by 23%.

Coadministration of a single dose of SEYSARA 150 mg resulted in a 26% increase in Cmax of digoxin, a P-gp substrate.

In Vitro Studies

Sarecycline is not a substrate for P-gp, BCRP, OATP1B1, or OATP1B3.

Sarecycline is a P-gp inhibitor. Sarecycline does not inhibit CYP1A2, CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP2E1, or CYP3A4/5 isozymes, and does not inhibit OATP1B1, OATP1B3, OCT2, OAT1, OAT3, or BCRP.

Sarecycline does not induce CYP1A2, CYP2B6, or CYP3A4/5 isozymes.

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