This information is not for clinical use. These highlights do not include all the information needed to use Osphena safely and effectively. Before taking Osphena please consult with your doctor. See full prescribing information for Osphena.

Warning

WARNING: ENDOMETRIAL CANCER and CARDIOVASCULAR DISORDERS WARNING: ENDOMETRIAL CANCER and CARDIOVASCULAR DISORDERS See full prescribing information for complete boxed warning. OSPHENA is an estrogen agonist/antagonist with tissue selective effects. In the endometrium, OSPHENA has estrogen agonistic effects. There is an increased risk of endometrial cancer in a woman with a uterus who uses unopposed estrogens. Adequate diagnostic measures, including directed and random endometrial sampling when indicated, should be undertaken to rule out malignancy in postmenopausal women with undiagnosed persistent or recurring abnormal genital bleeding [see Warnings and Precautions (5.2)]. Estrogen-alone therapy has an increased risk of stroke and deep vein thrombosis (DVT). OSPHENA 60 mg had cerebral thromboembolic and hemorrhagic stroke incidence rates of 1.13 and 3.39 per thousand women years, respectively vs. 3.15 and 0 per thousand women years, respectively with placebo. For deep vein thrombosis, the incidence rate for OSPHENA 60 mg is 2.26 per thousand women years (2 reported cases) vs. 3.15 per thousand women years (1 reported case) with placebo [see Warnings and Precautions (5.1)]. Endometrial Cancer OSPHENA is an estrogen agonist/antagonist with tissue selective effects. In the endometrium, OSPHENA has estrogen agonistic effects. There is a potential increased risk of endometrial cancer in a woman with a uterus who uses unopposed estrogens. Adequate diagnostic measures, including directed and random endometrial sampling when indicated, should be undertaken to rule out malignancy in postmenopausal women with undiagnosed persistent or recurring abnormal genital bleeding [see Warnings and Precautions (5.2)]. Cardiovascular Disorders In the clinical trials for OSPHENA (duration of treatment up to 15 months), the incidence rates of thromboembolic and hemorrhagic stroke were 1.13 and 3.39 per thousand women years, respectively in the OSPHENA 60 mg treatment group and 3.15 and 0 with placebo [see Warnings and Precautions (5.1)]. The incidence of DVT was 2.26 per thousand women years (2 reported cases) in the OSPHENA 60 mg treatment group and 3.15 per thousand women years (1 reported case) with placebo [see Warnings and Precautions (5.1)]. OSPHENA should be prescribed for the shortest duration consistent with treatment goals and risks for the individual woman. There is a reported increased risk of stroke and deep vein thrombosis (DVT) in postmenopausal women (50 to 79 years of age) who received daily oral conjugated estrogens (CE) [0.625 mg]-alone therapy over 7.1 years as part of the Women's Health Initiative (WHI) [see Warnings and Precautions (5.1)].

Recent Changes

Boxed Warning 01/2019
Indications and Usage (1) 01/2019
Warnings and Precautions, Cardiovascular Disorders (5.1) 01/2019
Warnings and Precautions, Malignant Neoplasms (5.2) 01/2019

Indications And Usage

OSPHENA is indicated for: OSPHENA is an estrogen agonist/antagonist indicated for: The treatment of moderate to severe dyspareunia, a symptom of vulvar and vaginal atrophy, due to menopause. (1.1) The treatment of moderate to severe vaginal dryness, a symptom of vulvar and vaginal atrophy, due to menopause. (1.2) 1.1 The Treatment of Moderate to Severe Dyspareunia, a Symptom of Vulvar and Vaginal Atrophy, Due to Menopause. 1.2 The Treatment of Moderate to Severe Vaginal Dryness, a Symptom of Vulvar and Vaginal Atrophy, Due to Menopause.

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Dosage Forms And Strengths

OSPHENA tablets are white to off-white, oval, biconvex, film coated tablets containing 60 mg of ospemifene and engraved with "60" on one side. Tablet: 60 mg (3)

Contraindications

OSPHENA is contraindicated in women with any of the following conditions: Undiagnosed abnormal genital bleeding. Known or suspected estrogen-dependent neoplasia. Active DVT, pulmonary embolism (PE), or a history of these conditions. Active arterial thromboembolic disease [for example, stroke and myocardial infarction (MI)], or a history of these conditions. Hypersensitivity (for example, angioedema, urticaria, rash, pruritus) to OSPHENA or any ingredients. OSPHENA is contraindicated in women who are or may become pregnant. OSPHENA may cause fetal harm when administered to a pregnant woman. Ospemifene was embryo-fetal lethal with labor difficulties and increased pup deaths in rats at doses below clinical exposures, and embryo-fetal lethal in rabbits at 10 times the clinical exposure based on mg/m2. If this drug is used during pregnancy, or if a woman becomes pregnant while taking this drug, she should be apprised of the potential hazard to a fetus. Undiagnosed abnormal genital bleeding (4) Known or suspected estrogen-dependent neoplasia (4, 5.2) Active DVT, pulmonary embolism (PE), or a history of these conditions (4, 5.1) Active arterial thromboembolic disease (for example, stroke and myocardial infarction [MI]), or a history of these conditions (4, 5.1) Hypersensitivity (for example, angioedema, urticaria, rash, pruritus) to OSPHENA or any ingredients (4) Known or suspected pregnancy (4, 8.1)

Warning and Cautions

Venous Thromboembolism: Risk of DVT and pulmonary embolism (5.1) Known, suspected, or history of breast cancer (5.2) Severe Hepatic Impairment (5.3, 8.7, 12.3) 5.1 Cardiovascular Disorders Risk factors for cardiovascular disorders, arterial vascular disease (for example, hypertension, diabetes mellitus, tobacco use, hypercholesterolemia, and obesity) and/or venous thromboembolism (VTE) (for example, personal history or family history of VTE, obesity, and systemic lupus erythematosus) should be managed appropriately. Stroke In the clinical trials for OSPHENA (duration of treatment up to 15 months), the incidence rates of thromboembolic and hemorrhagic stroke were 1.13 and 3.39 per thousand women years, respectively in OSPHENA 60 mg treatment group and 3.15 and 0 per thousand women years in placebo. Should thromboembolic or hemorrhagic stroke occur or be suspected, OSPHENA should be discontinued immediately. In the WHI estrogen-alone substudy, a statistically significant increased risk of stroke was reported in women 50 to 79 years of age receiving daily CE (0.625 mg)-alone compared to women in the same age group receiving placebo (45 versus 33 per ten thousand women years). The increase in risk was demonstrated in year 1 and persisted. Coronary Heart Disease In the OSPHENA clinical trials, two cases of myocardial infarction (MI) occurred in women receiving 60 mg of ospemifene. In the WHI estrogen-alone substudy, no overall effect on coronary heart disease (CHD) events (defined as nonfatal MI, silent MI, or CHD death) was reported in women receiving estrogen-alone compared to placebo. Venous Thromboembolism In the OSPHENA clinical trials, two cases of DVT occurred in women receiving OSPHENA 60 mg. Should a VTE occur or be suspected, OSPHENA should be discontinued immediately. If feasible, OSPHENA should be discontinued at least 4 to 6 weeks before surgery of the type associated with an increased risk of thromboembolism, or during periods of prolonged immobilization. In the WHI estrogen-alone substudy, the risk of VTE (DVT and PE) was increased for women receiving daily CE (0.625 mg)-alone compared to placebo (30 versus 22 per ten thousand women years), although only the increased risk of DVT reached statistical significance (23 versus 15 per ten thousand women years). The increase in VTE risk was demonstrated during the first 2 years. 5.2 Malignant Neoplasms Endometrial Cancer OSPHENA is an estrogen agonist/antagonist with tissue selective effects. In the endometrium, OSPHENA has agonistic effects. In the OSPHENA clinical trials (60 mg treatment group), no cases of endometrial cancer were seen with exposure up to 52 weeks. There was a single case of simple hyperplasia without atypia. Endometrial thickening equal to 5 mm or greater was seen in the OSPHENA up to 52 weeks treatment groups at a rate of 101.4 per thousand women vs. 20.9 per thousand women for placebo. The incidence of any type of proliferative (weakly plus active plus disordered) endometrium was 26.3 per thousand women in the OSPHENA up to 52 weeks treatment groups vs. 0 per thousand women for placebo. Uterine polyps occurred at an incidence of 19.6 per thousand women in the OSPHENA up to 52 weeks treatment groups vs. 8.3 per thousand women for placebo. An increased risk of endometrial cancer has been reported with the use of unopposed estrogen therapy in a woman with a uterus. The reported endometrial cancer risk among unopposed estrogen users is about 2 to 12 times greater than in non-users, and appears dependent on duration of treatment and on estrogen dose. Most studies show no significant increased risk associated with the use of estrogens for less than 1 year. The greatest risk appears to be associated with prolonged use, with increased risks of 15- to 24-fold for 5 to 10 years or more. This risk has been shown to persist for at least 8 to 15 years after estrogen therapy is discontinued. Adding a progestin to postmenopausal estrogen therapy has been shown to reduce the risk of endometrial hyperplasia, which may be a precursor to endometrial cancer. There are, however, possible risks that may be associated with the use of progestins with estrogens compared to estrogen-alone regimens. These include an increased risk of breast cancer. The use of progestins with OSPHENA therapy was not evaluated in the clinical trials. Clinical surveillance of all women using OSPHENA is important. Adequate diagnostic measures, including directed or random endometrial sampling when indicated, should be undertaken to rule out malignancy in postmenopausal women with undiagnosed persistent or recurring abnormal genital bleeding. Breast Cancer OSPHENA 60 mg has not been adequately studied in women with breast cancer; therefore, it should not be used in women with known or suspected breast cancer. 5.3 Severe Hepatic Impairment OSPHENA should not be used in women with severe hepatic impairment [see Use in Specific Populations (8.7), and Clinical Pharmacology (12.3)].

Adverse Reactions

The following serious adverse reactions are discussed elsewhere in the labeling: Cardiovascular Disorders [see Boxed Warning, Warnings and Precautions (5.1)] Malignant Neoplasms [see Boxed Warning, Warnings and Precautions (5.2)] Adverse reactions (≥1 percent) include: hot flush, vaginal discharge, muscle spasms, headache, hyperhidrosis, vaginal hemorrhage, night sweats. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact Duchesnay Inc. at 1-855-OSPHENA (1-855-677-4362) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience 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 safety of OSPHENA has been assessed in ten phase 2/3 trials (N=2209) with doses ranging from 5 to 90 mg per day. The duration of treatment in these studies ranged from 6 weeks to 15 months. The majority of women (N=1683) had treatment exposure up to 12 weeks; 847 had up to 52 weeks (1 year) of exposure. The incidence rates of thromboembolic and hemorrhagic stroke were 1.13 per thousand women years (1 reported case of thromboembolic stroke) and 3.39 per thousand women years (3 reported cases of hemorrhagic stroke), respectively in OSPHENA 60 mg treatment group and 3.15 (1 case of thromboembolic stroke) and 0 per thousand women years, respectively in placebo. There were 2 reported cases of DVT among the 1459 women in the OSPHENA 60 mg treatment group and 1 case of DVT among the 1136 women in the placebo group. Table 1 lists adverse reactions occurring more frequently in the OSPHENA 60 mg treatment group than in placebo and at a frequency ≥1% in the 12-week, double-blind, placebo-controlled clinical trials. Table 2 lists adverse reactions occurring more frequently in the OSPHENA 60 mg treatment group than in placebo and at a frequency ≥1% in all clinical trials up to 52-weeks. Table 1: Adverse Reactions Reported More Commonly in the OSPHENA Treatment Group (60 mg Once Daily) and at Frequency ≥1.0% in the 12 Week Double-Blind, Controlled Clinical Trials with OSPHENA vs. Placebo Ospemifene 60 mg (N=1459) % Placebo (N=1136) % Vascular Disorders Hot flush 6.5 2.6 Reproductive System and Breast Disorders Vaginal discharge 3.8 0.4 Musculoskeletal and Connective Tissue Disorders Muscle spasms 1.8 0.6 Skin and Subcutaneous Tissue Disorders Hyperhidrosis 1.1 0.2 Table 2: Adverse Reactions Reported More Commonly in the OSPHENA Treatment Group (60 mg Once Daily) and at Frequency ≥1.0% in All Clinical Trials up to 52 Weeks (Safety Population) Ospemifene 60 mg All Trials (N=847) % Placebo (N=165) % Nervous System Disorders Headaches 2.8 2.4 Vascular Disorders Hot flush 12.2 4.2 Musculoskeletal and Connective Tissue Disorders Muscle spasms 4.5 2.4 Skin and Subcutaneous Tissue Disorders Hyperhidrosis 2.5 1.8 Night sweats 1.2 0.0 Reproductive System and Breast Disorders Vaginal discharge 6.0 0.6 Vaginal hemorrhage 1.3 0.0 6.2 Postmarketing Experience The following adverse reactions have been identified during post-approval use of ospemifene. Because these reactions are reported voluntarily from a population of uncertain size, it is not possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Neoplasms Benign, Malignant and Unspecified (incl. cysts and polyps): endometrial hyperplasia, endometrial cancer Immune System Disorders: allergic conditions including hypersensitivity, angioedema Nervous System Disorders: headache Vascular Disorders: deep vein thrombosis, thrombosis, pulmonary embolism Skin and Subcutaneous Tissue Disorders: rash, rash erythematous, rash generalized, pruritus, urticaria

Drug Interactions

OSPHENA is primarily metabolized by CYP3A4 and CYP2C9. CYP2C19 and other pathways contribute to the metabolism of ospemifene. Do not use estrogens or estrogen agonist/antagonist concomitantly with OSPHENA. (7.1,12.3) Do not use fluconazole concomitantly with OSPHENA. Fluconazole increases serum concentrations of OSPHENA. (7.2, 12.3) Do not use rifampin concomitantly with OSPHENA. Rifampin decreases serum concentration of OSPHENA. (7.2, 12.3) 7.1 Estrogens and Estrogen Agonist/Antagonist Do not use OSPHENA concomitantly with estrogens and estrogen agonists/antagonists. The safety of concomitant use of OSPHENA with estrogens and estrogen agonists/antagonists has not been studied. 7.2 Fluconazole Fluconazole, a moderate CYP3A / strong CYP2C9 / moderate CYP2C19 inhibitor, should not be used with OSPHENA. Fluconazole increases the systemic exposure of ospemifene by 2.7-fold. Administration of fluconazole with ospemifene may increase the risk of OSPHENA-related adverse reactions [see Clinical Pharmacology (12.3)]. 7.3 Rifampin Rifampin, a strong CYP3A4 / moderate CYP2C9 / moderate CYP2C19 inducer, decreases the systemic exposure of ospemifene by 58%. Therefore, co-administration of OSPHENA with drugs such as rifampin which induce CYP3A4, CYP2C9 and/or CYP2C19 activity would be expected to decrease the systemic exposure of ospemifene, which may decrease the clinical effect [see Clinical Pharmacology (12.3)]. 7.4 Ketoconazole Ketoconazole, a strong CYP3A4 inhibitor, increases the systemic exposure of ospemifene by 1.4-fold. Administration of ketoconazole chronically with ospemifene may increase the risk of OSPHENA-related adverse reactions [see Clinical Pharmacology (12.3)]. 7.5 Warfarin Repeated administration of ospemifene had no effect on the pharmacokinetics of a single 10 mg dose of warfarin. No study was conducted with multiple doses of warfarin. The effect of ospemifene on clotting time such as the International Normalized Ratio (INR) or prothrombin time (PT) was not studied [see Clinical Pharmacology (12.3)]. 7.6 Highly Protein-Bound Drugs Ospemifene is more than 99% bound to serum proteins and might affect the protein binding of other drugs. Use of OSPHENA with other drug products that are highly protein-bound may lead to increased exposure of either that drug or ospemifene [see Clinical Pharmacology (12.3)]. 7.7 Multiple Enzyme Inhibition Co-administration of OSPHENA with a drug known to inhibit CYP3A4 and CYP2C9 isoenzymes may increase the risk of OSPHENA-related adverse reactions.

Use In Specific Populations

Lactation: It is not known whether OSPHENA is excreted in human breast milk. You should not breastfeed while taking OSPHENA. (8.2) 8.1 Pregnancy Risk Summary Not Recommended During Pregnancy OSPHENA is contraindicated in women who are or may become pregnant. If this drug is used during pregnancy, or if a woman becomes pregnant while taking this drug, she should be apprised of the potential hazard to a fetus [see Contraindications (4)]. Based on animal data, OSPHENA is likely to increase the risk of adverse outcomes during pregnancy and labor. Adverse findings at maternally toxic doses included embryofetal lethality in rats and rabbits, and neonatal mortality and difficult labor in rats. The reproductive effects observed are consistent with and are considered to be related to estrogen receptor activity of OSPHENA. 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 The effects of ospemifene on embryo-fetal development were studied in rats (0.1, 1, or 4 mg/kg/day) and rabbits (3, 10, or 30 mg/kg/day) when treated from implantation through organogenesis [Gestation Day (GD) 6-16 in the rat and GD6-18 in the rabbit. In rabbits, there was an increase in the incidence of total resorptions at 30 mg/kg/day (10 times the human exposure based on body surface area mg/m2)]. Drug-induced malformations were not observed in either rats or rabbits. The effects of ospemifene on pre- and postnatal development were studied in pregnant rats (0.01, 0.05, and 0.25 mg/kg/day) treated from implantation (GD6) through lactation (Lactation Day (LD) 21). Pregnant rats given 0.05 or 0.25 mg/kg/day ospemifene (0.8% to 4% the human exposure based on body surface area mg/m2) had a significantly prolonged and difficult gestation, increased post-implantation loss, increased number of dead pups at birth, and an increased incidence of postnatal loss. Ospemifene did not induce adverse effects in the surviving offspring of pregnant rats at drug exposures up to 4% the human exposure. 8.2 Lactation Risk Summary It is not known whether OSPHENA is excreted in human breast milk. There are no data on the effects of OSPHENA on the breastfed child or the effects on milk production. Do not breastfeed while taking OSPHENA. Ospemifene was excreted in rat milk [see Data]. Data In a nonclinical study, ospemifene was excreted in rat milk and detected at concentrations higher than that in maternal plasma. 8.4 Pediatric Use OSPHENA is not indicated in children. Clinical studies have not been conducted in the pediatric population. 8.5 Geriatric Use Of the 2209 OSPHENA-treated women enrolled in the ten phase 2/3 trials of OSPHENA, >19 percent were 65 years of age or older. No clinically meaningful differences in safety or effectiveness were observed between these women and younger women less than 65 years of age. 8.6 Renal Impairment The pharmacokinetics of ospemifene in women with severe renal impairment (CrCL <30 mL/min) was similar to those in women with normal renal function [see Clinical Pharmacology (12.3)]. No dose adjustment of OSPHENA is required in women with renal impairment. 8.7 Hepatic Impairment The pharmacokinetics of ospemifene has not been studied in women with severe hepatic impairment (Child-Pugh Class C); therefore, do not use OSPHENA in women with severe hepatic impairment [see Warnings and Precautions (5.3), and Clinical Pharmacology (12.3)]. No clinically important pharmacokinetic differences with OSPHENA were observed between women with mild to moderate hepatic impairment and healthy women [see Clinical Pharmacology (12.3)]. No dose adjustment of OSPHENA is required in women with mild (Child-Pugh Class A) or moderate (Child-Pugh Class B) hepatic impairment.