Loteprednol Etabonate

6 ADVERSE REACTIONS Adverse reactions associated with ophthalmic steroids include elevated intraocular pressure, which may be associated with infrequent optic nerve damage, visual acuity and field defects, posterior subcapsular cataract formation, delayed wound healing and secondary ocular infection from pathogens including herpes simplex, and perforation of the globe where there is thinning of the cornea or sclera. The most common adverse drug reactions reported in the clinical trials (2 to 5%) were anterior chamber inflammation, eye pain, and foreign body sensation. The most common adverse drug reactions (2 to 5%) were anterior chamber inflammation, eye pain, and foreign body sensation. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Sentiss at 1-855-473-6847 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

4 CONTRAINDICATIONS Loteprednol etabonate ophthalmic gel is contraindicated in most viral diseases of the cornea and conjunctiva including epithelial herpes simplex keratitis (dendritic keratitis), vaccinia, and varicella, in mycobacterial infection of the eye and fungal diseases of ocular structures. Loteprednol etabonate ophthalmic gel is contraindicated in most viral diseases of the cornea and conjunctiva including epithelial herpes simplex keratitis (dendritic keratitis), vaccinia, and varicella, in mycobacterial infection of the eye and fungal diseases of ocular structures. ( 4 )

11 DESCRIPTION Loteprednol etabonate is a corticosteroid. Its chemical name is chloromethyl 17α-[(ethoxycarbonyl)oxy]-11β-hydroxy-3-oxoandrosta-1,4-diene-17β-carboxylate. Its molecular formula is C 24 H 31 ClO 7 and its chemical structure is: Loteprednol etabonate ophthalmic gel 0.5% contains a sterile, topical corticosteroid for ophthalmic use. Loteprednol etabonate is a white to off-white powder. Each gram contains: ACTIVE: loteprednol etabonate 5 mg (0.5%) INACTIVES: boric acid, edetate disodium dihydrate, glycerin, polycarbophil, propylene glycol, sodium chloride, tyloxapol, water for injection, and sodium hydroxide to adjust to a pH of between 6 and 7 PRESERVATIVE: benzalkonium chloride 0.003% Chemical Structure

2 DOSAGE AND ADMINISTRATION Invert closed bottle and shake once to fill tip before instilling drops. Apply one to two drops of loteprednol etabonate ophthalmic gel into the conjunctival sac of the affected eye four times daily beginning the day after surgery and continuing throughout the first 2 weeks of the post-operative period. Invert closed bottle and shake once to fill tip before instilling drops. ( 2 ) Apply one to two drops of Loteprednol etabonate ophthalmic gel into the conjunctival sac of the affected eye four times daily beginning the day after surgery and continuing throughout the first 2 weeks of the postoperative period. ( 2 )

1 INDICATIONS AND USAGE Loteprednol etabonate ophthalmic gel is a corticosteroid indicated for the treatment of post-operative inflammation and pain following ocular surgery. Loteprednol etabonate ophthalmic gel is a corticosteroid indicated for the treatment of postoperative inflammation and pain following ocular surgery. ( 1 )

12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Corticosteroids inhibit the inflammatory response to a variety of inciting agents and probably delay or slow healing. They inhibit the edema, fibrin deposition, capillary dilation, leukocyte migration, capillary proliferation, fibroblast proliferation, deposition of collagen, and scar formation associated with inflammation. While glucocorticoids are known to bind to and activate the glucocorticoid receptor, the molecular mechanisms involved in glucocorticoid/glucocorticoid receptor-dependent modulation of inflammation are not clearly established. However, corticosteroids are thought to inhibit prostaglandin production through several independent mechanisms. 12.3 Pharmacokinetics Loteprednol etabonate is lipid soluble and can penetrate into cells. Loteprednol etabonate is synthesized through structural modifications of prednisolone-related compounds so that it will undergo a predictable transformation to an inactive metabolite. Based upon in vivo and in vitro preclinical metabolism studies, loteprednol etabonate undergoes extensive metabolism to the inactive carboxylic acid metabolites, PJ-91 and PJ-90. The systemic exposure to loteprednol etabonate following ocular administration of loteprednol etabonate ophthalmic gel has not been studied in humans.

12.1 Mechanism of Action Corticosteroids inhibit the inflammatory response to a variety of inciting agents and probably delay or slow healing. They inhibit the edema, fibrin deposition, capillary dilation, leukocyte migration, capillary proliferation, fibroblast proliferation, deposition of collagen, and scar formation associated with inflammation. While glucocorticoids are known to bind to and activate the glucocorticoid receptor, the molecular mechanisms involved in glucocorticoid/glucocorticoid receptor-dependent modulation of inflammation are not clearly established. However, corticosteroids are thought to inhibit prostaglandin production through several independent mechanisms.

12.3 Pharmacokinetics Loteprednol etabonate is lipid soluble and can penetrate into cells. Loteprednol etabonate is synthesized through structural modifications of prednisolone-related compounds so that it will undergo a predictable transformation to an inactive metabolite. Based upon in vivo and in vitro preclinical metabolism studies, loteprednol etabonate undergoes extensive metabolism to the inactive carboxylic acid metabolites, PJ-91 and PJ-90. The systemic exposure to loteprednol etabonate following ocular administration of loteprednol etabonate ophthalmic gel has not been studied in humans.

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3 DOSAGE FORMS AND STRENGTHS Loteprednol etabonate ophthalmic gel is a sterile preserved ophthalmic gel 0.5% containing 5 mg of loteprednol etabonate per gram of gel. Loteprednol etabonate ophthalmic gel is a sterile preserved ophthalmic gel containing 5 mg of loteprednol etabonate per gram of gel. ( 3 )

Loteprednol Etabonate Loteprednol Etabonate BORIC ACID EDETATE DISODIUM GLYCERIN POLYCARBOPHIL PROPYLENE GLYCOL SODIUM CHLORIDE TYLOXAPOL WATER SODIUM HYDROXIDE BENZALKONIUM CHLORIDE LOTEPREDNOL ETABONATE LOTEPREDNOL

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term animal studies have not been conducted to evaluate the carcinogenic potential of loteprednol etabonate. Loteprednol etabonate was not genotoxic in vitro in the Ames test, the mouse lymphoma tk assay, or in a chromosome aberration test in human lymphocytes, or in vivo in the single dose mouse micronucleus assay. Treatment of female and male rats with doses ≥ 25 mg/kg/day of loteprednol etabonate (152 times the RHOD based on body surface area, assuming 100% absorption) prior to and during mating caused preimplantation loss and decreased the number of live fetuses/live births. The NOAEL for fertility in rats was 5 mg/kg/day (30 times the RHOD).

13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term animal studies have not been conducted to evaluate the carcinogenic potential of loteprednol etabonate. Loteprednol etabonate was not genotoxic in vitro in the Ames test, the mouse lymphoma tk assay, or in a chromosome aberration test in human lymphocytes, or in vivo in the single dose mouse micronucleus assay. Treatment of female and male rats with doses ≥ 25 mg/kg/day of loteprednol etabonate (152 times the RHOD based on body surface area, assuming 100% absorption) prior to and during mating caused preimplantation loss and decreased the number of live fetuses/live births. The NOAEL for fertility in rats was 5 mg/kg/day (30 times the RHOD).

ANDA212080

Loteprednol Etabonate

Loteprednol Etabonate

72485-630

HUMAN PRESCRIPTION DRUG

OPHTHALMIC

Principal Display Panel Text for Container Label: NDC 72485-630-05 Loteprednol Etabonate Ophthalmic Gel 0.5% FOR USE IN THE EYES ONLY Rx only Sterile 5 g container

17 PATIENT COUNSELING INFORMATION Administration Invert closed bottle and shake once to fill tip before instilling drops. Risk of Contamination Advise patients not to allow the dropper tip to touch any surface, as this may contaminate the gel. Contact Lens Wear Advise patients not to wear contact lenses when using loteprednol etabonate ophthalmic gel. Risk of Secondary Infection Advise the patient to consult a physician if pain develops, redness, itching or inflammation becomes aggravated. Distributed by: Armas Pharmaceuticals, Inc. Freehold, NH 07728 USA Manufactured by: Ophtapharm AG Riethofstrasse 1, Hettlingen, 8442, Switzerland (CHE) for Sentiss Made in Switzerland Rev. 08/23

14 CLINICAL STUDIES Adult Studies In two randomized, multicenter, double-masked, parallel-group, vehicle-controlled studies in 813 subjects with post-operative inflammation, loteprednol etabonate ophthalmic gel was more effective compared to its vehicle in resolving anterior chamber inflammation and pain following cataract surgery. Primary endpoints were complete resolution of anterior chamber cells (cell count of 0) and no pain at post-operative day 8. In these studies, loteprednol etabonate ophthalmic gel had a statistically significant higher incidence of subjects with complete clearing of anterior chamber cells (31% vs. 14 to 16%) and were pain-free at post-operative day 8 (73 to 76% vs. 42 to 46%). Pediatric Study Pediatric use information is approved for Bausch and Lomb Inc.'s LOTEMAX (loteprednol etabonate) ophthalmic gel. However, due to Bausch and Lomb Inc.'s marketing exclusivity rights, this drug product is not labeled with the pediatric information.

8.5 Geriatric Use No overall differences in safety and effectiveness have been observed between elderly and younger patients.

8.4 Pediatric Use Pediatric use information is approved for Bausch and Lomb Inc.'s LOTEMAX (loteprednol etabonate) ophthalmic gel. However, due to Bausch and Lomb Inc.'s marketing exclusivity rights, this drug product is not labeled with the pediatric information.

8.1 Pregnancy Risk Summary There are no adequate and well-controlled studies with loteprednol etabonate in pregnant women. Loteprednol etabonate produced teratogenicity at clinically relevant doses in the rabbit and rat when administered orally during pregnancy. Loteprednol etabonate produced malformations when administered orally to pregnant rabbits at doses ≥ 1.2 times the recommended human ophthalmic dose (RHOD) and to pregnant rats at doses ≥ 30 times the RHOD. In pregnant rats receiving oral doses of loteprednol etabonate during the period equivalent to the last trimester of pregnancy through lactation in humans, survival of offspring was reduced at doses ≥ 3 times the RHOD. Maternal toxicity was observed in rats at doses ≥ 304 times the RHOD, and a maternal no observed adverse effect level (NOAEL) was established at 30 times the RHOD. The background risk of major birth defects and miscarriage for the indicated population is unknown. However, the background risk in the U.S. general population of major birth defects is 2 to 4%, and of miscarriage is 15 to 20%, of clinically recognized pregnancies. Data Animal Data Embryofetal studies were conducted in pregnant rabbits administered loteprednol etabonate by oral gavage on gestation days 6 to 18, to target the period of organogenesis. Loteprednol etabonate produced fetal malformations at doses ≥ 0.1 mg/kg (1.2 times the recommended human ophthalmic dose (RHOD) based on body surface area, assuming 100% absorption). Spina bifida (including meningocele) was observed at doses ≥ 0.1 mg/kg, and exencephaly and craniofacial malformations were observed at doses ≥ 0.4 mg/kg (4.9 times the RHOD). At 3 mg/kg (36 times the RHOD), loteprednol etabonate was associated with increased incidences of abnormal left common carotid artery, limb flexures, umbilical hernia, scoliosis, and delayed ossification. Abortion and embryofetal lethality (resorption) occurred at doses ≥ 6 mg/kg (73 times the RHOD). A NOAEL for developmental toxicity was not established in this study. The NOAEL for maternal toxicity in rabbits was 3 mg/kg/day. Embryofetal studies were conducted in pregnant rats administered loteprednol etabonate by oral gavage on gestation days 6 to 15, to target the period of organogenesis. Loteprednol etabonate produced fetal malformations, including absent innominate artery at doses ≥ 5 mg/kg (30 times the RHOD); and cleft palate, agnathia, cardiovascular defects, umbilical hernia, decreased fetal body weight and decreased skeletal ossification at doses ≥ 50 mg/kg (304 times the RHOD). Embryofetal lethality (resorption) was observed at 100 mg/kg (608 times the RHOD). The NOAEL for developmental toxicity in rats was 0.5 mg/kg (3 times the RHOD). Loteprednol etabonate was maternally toxic (reduced body weight gain) at doses of ≥ 50 mg/kg/day. The NOAEL for maternal toxicity was 5 mg/kg. A peri-/postnatal study was conducted in rats administered loteprednol etabonate by oral gavage from gestation day 15 (start of fetal period) to postnatal day 21 (the end of lactation period). At doses ≥ 0.5 mg/kg (3 times the clinical dose), reduced survival was observed in live-born offspring. Doses ≥ 5 mg/kg (30 times the RHOD) caused umbilical hernia/incomplete gastrointestinal tract. Doses ≥ 50 mg/kg (304 times the RHOD) produced maternal toxicity (reduced body weight gain, death), decreased number of live-born offspring, decreased birth weight, and delays in postnatal development. A developmental NOAEL was not established in this study. The NOAEL for maternal toxicity was 5 mg/kg.

8 USE IN SPECIFIC POPULATIONS 8.1 Pregnancy Risk Summary There are no adequate and well-controlled studies with loteprednol etabonate in pregnant women. Loteprednol etabonate produced teratogenicity at clinically relevant doses in the rabbit and rat when administered orally during pregnancy. Loteprednol etabonate produced malformations when administered orally to pregnant rabbits at doses ≥ 1.2 times the recommended human ophthalmic dose (RHOD) and to pregnant rats at doses ≥ 30 times the RHOD. In pregnant rats receiving oral doses of loteprednol etabonate during the period equivalent to the last trimester of pregnancy through lactation in humans, survival of offspring was reduced at doses ≥ 3 times the RHOD. Maternal toxicity was observed in rats at doses ≥ 304 times the RHOD, and a maternal no observed adverse effect level (NOAEL) was established at 30 times the RHOD. The background risk of major birth defects and miscarriage for the indicated population is unknown. However, the background risk in the U.S. general population of major birth defects is 2 to 4%, and of miscarriage is 15 to 20%, of clinically recognized pregnancies. Data Animal Data Embryofetal studies were conducted in pregnant rabbits administered loteprednol etabonate by oral gavage on gestation days 6 to 18, to target the period of organogenesis. Loteprednol etabonate produced fetal malformations at doses ≥ 0.1 mg/kg (1.2 times the recommended human ophthalmic dose (RHOD) based on body surface area, assuming 100% absorption). Spina bifida (including meningocele) was observed at doses ≥ 0.1 mg/kg, and exencephaly and craniofacial malformations were observed at doses ≥ 0.4 mg/kg (4.9 times the RHOD). At 3 mg/kg (36 times the RHOD), loteprednol etabonate was associated with increased incidences of abnormal left common carotid artery, limb flexures, umbilical hernia, scoliosis, and delayed ossification. Abortion and embryofetal lethality (resorption) occurred at doses ≥ 6 mg/kg (73 times the RHOD). A NOAEL for developmental toxicity was not established in this study. The NOAEL for maternal toxicity in rabbits was 3 mg/kg/day. Embryofetal studies were conducted in pregnant rats administered loteprednol etabonate by oral gavage on gestation days 6 to 15, to target the period of organogenesis. Loteprednol etabonate produced fetal malformations, including absent innominate artery at doses ≥ 5 mg/kg (30 times the RHOD); and cleft palate, agnathia, cardiovascular defects, umbilical hernia, decreased fetal body weight and decreased skeletal ossification at doses ≥ 50 mg/kg (304 times the RHOD). Embryofetal lethality (resorption) was observed at 100 mg/kg (608 times the RHOD). The NOAEL for developmental toxicity in rats was 0.5 mg/kg (3 times the RHOD). Loteprednol etabonate was maternally toxic (reduced body weight gain) at doses of ≥ 50 mg/kg/day. The NOAEL for maternal toxicity was 5 mg/kg. A peri-/postnatal study was conducted in rats administered loteprednol etabonate by oral gavage from gestation day 15 (start of fetal period) to postnatal day 21 (the end of lactation period). At doses ≥ 0.5 mg/kg (3 times the clinical dose), reduced survival was observed in live-born offspring. Doses ≥ 5 mg/kg (30 times the RHOD) caused umbilical hernia/incomplete gastrointestinal tract. Doses ≥ 50 mg/kg (304 times the RHOD) produced maternal toxicity (reduced body weight gain, death), decreased number of live-born offspring, decreased birth weight, and delays in postnatal development. A developmental NOAEL was not established in this study. The NOAEL for maternal toxicity was 5 mg/kg. 8.2 Lactation There are no data on the presence of loteprednol etabonate in human milk, the effects on the breastfed infant, or the effects on milk production. The developmental and health benefits of breastfeeding should be considered, along with the mother's clinical need for loteprednol etabonate ophthalmic gel and any potential adverse effects on the breastfed infant from loteprednol etabonate ophthalmic gel. 8.4 Pediatric Use Pediatric use information is approved for Bausch and Lomb Inc.'s LOTEMAX (loteprednol etabonate) ophthalmic gel. However, due to Bausch and Lomb Inc.'s marketing exclusivity rights, this drug product is not labeled with the pediatric information. 8.5 Geriatric Use No overall differences in safety and effectiveness have been observed between elderly and younger patients.

16 HOW SUPPLIED/STORAGE AND HANDLING Loteprednol Etabonate Ophthalmic Gel 0.5% is a sterile ophthalmic gel supplied in a white low density polyethylene plastic bottle with a white controlled drop tip and a pink polypropylene cap in the following size: NDC 72485-630-05 5 g in a 10 mL bottle Storage: Store upright at 15º to 25º C (59º to 77º F).

Storage: Store upright at 15º to 25º C (59º to 77º F).