Climara

Warnings and Precautions ( 5.2 ) 12/2023

1 INDICATIONS AND USAGE Climara is indicated for: Climara is an estrogen indicated for: Treatment of Moderate to Severe Vasomotor Symptoms due to Menopause ( 1.1 ) Treatment of Moderate to Severe Symptoms of Vulvar and Vaginal Atrophy due to Menopause ( 1.2 ) Limitations of Use When prescribing solely for the treatment of moderate to severe symptoms of vulvar and vaginal atrophy due to menopause, first consider the use of topical vaginal products. Treatment of Hypoestrogenism due to Hypogonadism, Castration or Primary Ovarian Failure ( 1.3 ) Prevention of Postmenopausal Osteoporosis ( 1.4 ) Limitations of Use When prescribing solely for the prevention of postmenopausal osteoporosis, first consider the use of non-estrogen medications. Consider estrogen therapy only for women at significant risk of osteoporosis. 1.1 Treatment of Moderate to Severe Vasomotor Symptoms due to Menopause 1.2 Treatment of Moderate to Severe Symptoms of Vulvar and Vaginal Atrophy due to Menopause Limitation of Use When prescribing solely for the treatment of moderate to severe symptoms of vulvar and vaginal atrophy due to menopause, first consider the use of topical vaginal products. 1.3 Treatment of Hypoestrogenism due to Hypogonadism, Castration, or Primary Ovarian Failure 1.4 Prevention of Postmenopausal Osteoporosis Limitation of Use When prescribing solely for the prevention of postmenopausal osteoporosis, first consider the use of non-estrogen medications. Consider estrogen therapy only for women at significant risk of osteoporosis.

2 DOSAGE AND ADMINISTRATION Generally, when estrogen is prescribed for a postmenopausal woman with a uterus, consider addition of a progestogen to reduce the risk of endometrial cancer. Generally, a woman without a uterus does not need to use a progestogen in addition to her estrogen therapy. In some cases, however, hysterectomized women who have a history of endometriosis may need a progestogen [see Warnings and Precautions (5.2 , 5.14) ] . Use estrogen-alone, or in combination with a progestogen at the lowest effective dose and for the shortest duration consistent with treatment goals and risks for the individual woman. Reevaluate postmenopausal women periodically as clinically appropriate to determine if treatment is still necessary. Start therapy with Climara 0.025 mg per day applied to the skin once-weekly. Dosage adjustment should be guided by the clinical response ( 2.1 ) Place Climara on a clean, dry area of the lower abdomen (below the umbilicus) or upper quadrant of the buttock. Do not apply Climara to the breasts ( 2.5 ) 2.1 Treatment of Moderate to Severe Vasomotor Symptoms due to Menopause Start therapy with Climara 0.025 mg per day applied to the skin once weekly. Make dosage adjustments based on the clinical response. Attempt to taper or discontinue Climara at 3 to 6 month intervals. 2.2 Treatment of Moderate to Severe Symptoms of Vulvar and Vaginal Atrophy due to Menopause Start therapy with Climara 0.025 mg per day applied to the skin once weekly. Make dosage adjustments based on the clinical response. Attempt to taper or discontinue Climara at 3 to 6 month intervals. 2.3 Treatment of Hypoestrogenism due to Hypogonadism, Castration, or Primary Ovarian Failure Start therapy with 0.025 mg per day applied to the skin once weekly. Make dose adjustment based on the clinical response.. 2.4 Prevention of Postmenopausal Osteoporosis Start therapy with Climara 0.025 mg per day applied to the skin once weekly. 2.5 Application of the Climara Transdermal System Site Selection Place the adhesive side of Climara on a clean, dry area of the lower abdomen or the upper quadrant of the buttock. Do not apply Climara to or near the breasts. Rotate the sites of application, with an interval of at least 1-week allowed between applications to the same site. Select an area that is not oily, damaged, or irritated. Avoid the waistline, since tight clothing may rub the transdermal system off. Avoid application to areas where sitting would dislodge Climara. Application Apply Climara immediately after opening the pouch and removing the protective liner. Press Climara firmly in place with the fingers for at least 10 seconds, making sure there is good contact, especially around the edges. If the system lifts, apply pressure to maintain adhesion. In the event that a system falls off, reapply it to a different location. If the old system cannot be reapplied, apply a new system for the remainder of the 7-day dosing interval. Wear only one system at any one time during the 7-day dosing interval. Swimming, bathing, or using a sauna while using Climara has not been studied, and these activities may decrease the adhesion of the system and the delivery of estradiol. 2.6 Removal of the Climara Transdermal System Remove Climara carefully and slowly to avoid irritation of the skin. If any adhesive remains on the skin after removal of Climara, allow the area to dry for 15 minutes and then gently rub the area with an oil-based cream or lotion to remove the adhesive residue. Used patches still contain some active hormones. Carefully fold each patch in half so that it sticks to itself before throwing it away.

3 DOSAGE FORMS AND STRENGTHS Climara (estradiol transdermal system), 0.025 mg per day—each 6.5 cm 2 system contains 2 mg of estradiol Climara (estradiol transdermal system), 0.0375 mg per day—each 9.375 cm 2 system contains 2.85 mg of estradiol Climara (estradiol transdermal system), 0.05 mg per day—each 12.5 cm 2 system contains 3.8 mg of estradiol Climara (estradiol transdermal system), 0.060 mg per day—each 15 cm 2 system contains 4.55 mg of estradiol Climara (estradiol transdermal system), 0.075 mg per day—each 18.75 cm 2 system contains 5.7 mg of estradiol Climara (estradiol transdermal system), 0.1 mg per day—each 25.0 cm 2 system contains 7.6 mg of estradiol Transdermal system: 0.025 mg per day, 0.0375 mg per day, 0.05 mg per day, 0.06 mg per day, 0.075 mg per day and 0.1 mg per day ( 3 )

4 CONTRAINDICATIONS Climara is contraindicated in women with any of the following conditions: Undiagnosed abnormal genital bleeding [see Warnings and Precautions (5.2) ] Breast cancer or history of breast cancer [see Warnings and Precautions (5.2) ] Estrogen-dependent neoplasia [see Warnings and Precautions (5.2) ] Active DVT, PE, or a history of these conditions [see Warnings and Precautions (5.1) ] Active arterial thromboembolic disease (for example, stroke or MI), or a history of these conditions [see Warnings and Precautions (5.1) ] Known anaphylactic reaction, or angioedema, or hypersensitivity to Climara Hepatic impairment or disease Protein C, protein S, or antithrombin deficiency, or other known thrombophilic disorders Undiagnosed abnormal genital bleeding ( 4 , 5.2 ) Breast cancer or a history of breast cancer ( 4 , 5.2 ) Estrogen-dependent neoplasia ( 4 , 5.2 ) Active DVT, PE or a history of these conditions ( 4 , 5.1 ) Active arterial thromboembolic disease (for example, stroke or MI), or a history of these conditions ( 4 , 5.1 ) Known anaphylactic reaction, or angioedema, or hypersensitivity to Climara ( 4 ) Hepatic impairment or disease ( 4 , 5.10 ) Protein C, protein S, or antithrombin deficiency, or other known thrombophilic disorders ( 4 )

6 ADVERSE REACTIONS The following serious adverse reactions are discussed elsewhere in the labeling: Cardiovascular Disorders [see Boxed Warning , and Warnings and Precautions (5.1) ] Malignant Neoplasms [see Boxed Warning , and Warnings and Precautions (5.2) ] The most common adverse reactions (≥10 percent) with Climara are: breast pain, upper respiratory tract infections, headaches, abdominal pain, pain, and edema. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Bayer HealthCare Pharmaceuticals Inc. at 1-888-84-BAYER (1-888-842-2937) 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 data described below reflect pooled data from 5 clinical trials of Climara. A total of 614 women were exposed to Climara for 3 months (193 women at 0.025 mg per day, 201 women at 0.05 mg per day, 194 women at 0.1 mg per day) in randomized, double-blind trials of clinical efficacy versus placebo and versus active comparator. All women were postmenopausal, had a serum estradiol level of less than 20 pg/mL, and a minimum of five moderate to severe hot flushes per week or a minimum of 15 hot flushes per week of any severity at baseline. Included in this table are an additional 25 postmenopausal hysterectomized women exposed to Climara 0.025 mg per day for 6 to 24 months (N=16 at 24 months) in a randomized, double-blind, placebo-controlled study of Climara for the prevention of osteoporosis. Table 1: Treatment-Emergent Adverse Reactions Reported at a Frequency of ≥5 Percent and More Frequent in Women Receiving Climara Climara Body System Adverse Reactions 0.025 mg/day Adverse reactions occurring at rate of ≥5 percent in Climara trials of clinical efficacy versus placebo and versus active comparator; and trial of Climara versus placebo for the prevention of osteoporosis (N=219) 0.05 mg/day Adverse reactions occurring at rate of ≥5 percent in Climara trials of clinical efficacy versus placebo and versus active comparator (N=201) 0.1 mg/day (N=194) Placebo Adverse reactions occurring in placebo group in Climara trial of clinical efficacy versus placebo (N=72) Body as a Whole 21% 39% 37% 29% Headache 5% 18% 13% 10% Pain 1% 8% 11% 7% Back Pain 4% 8% 9% 6% Edema 0.5% 13% 10% 6% Digestive System 9% 21% 29% 18% Abdominal Pain 0% 11% 16% 8% Nausea 1% 5% 6% 3% Flatulence 1% 3% 7% 1% Musculoskeletal System 7% 9% 11% 4% Arthralgia 1% 5% 5% 3% Nervous System 13% 10% 11% 1% Depression 1% 5% 8% 0% Urogenital System 12% 18% 41% 11% Breast Pain 5% 8% 29% 4% Leukorrhea 1% 6% 7% 1% Respiratory System 15% 26% 29% 14% URTI 6% 17% 17% 8% Pharyngitis 0.5% 3% 7% 3% Sinusitis 4% 4% 5% 3% Rhinitis 2% 4% 6% 1% Skin and Appendages 19% 12% 12% 15% Pruritus 0.5% 6% 3% 6% 6.2 Postmarketing Experience The following adverse reactions have been identified during post-approval use of Climara. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Genitourinary System Changes in bleeding pattern, pelvic pain Breast Breast cancer, breast pain, breast tenderness Cardiovascular Changes in blood pressure, palpitations, hot flashes Gastrointestinal Vomiting, abdominal pain, abdominal distension, nausea Skin Alopecia, hyperhidrosis, night sweats, urticaria, rash Eyes Visual disturbances, contact lens intolerance, Central Nervous System Depression, migraine, paresthesia, dizziness, anxiety, irritability, mood swings, nervousness, insomnia, headache Miscellaneous Fatigue, menopausal symptoms, weight increase, application site reaction, anaphylactic reactions

7 DRUG INTERACTIONS In vitro and in vivo studies have shown that estrogens are metabolized partially by cytochrome P450 3A4 (CYP3A4). Therefore, inducers or inhibitors of CYP3A4 may affect estrogen drug metabolism. Inducers of CYP3A4 such as St. John's wort (hypericum perforatum) preparations, phenobarbital, carbamazepine, and rifampin may reduce plasma concentrations of estrogens, possibly resulting in a decrease in therapeutic effects and/or changes in the uterine bleeding profile. Inhibitors of CYP3A4 such as erythromycin, clarithromycin, ketoconazole, itraconazole, ritonavir and grapefruit juice may increase plasma concentrations of estrogens and may result in adverse reactions. Inducers and/or inhibitors of CYP3A4 may affect estrogen drug metabolism and decrease or increase the estrogen plasma concentration. ( 7 )

8 USE IN SPECIFIC POPULATIONS 8.1 Pregnancy Risk Summary Climara is not indicated for use in pregnancy. There are no data with the use of Climara in pregnant women; however, epidemiologic studies and meta-analyses have not found an increased risk of genital or nongenital birth defects (including cardiac anomalies and limb-reduction defects) following exposure to combined hormonal contraceptives (estrogens and progestins) before conception or during early pregnancy. 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. 8.2 Lactation Risk Summary Estrogens are present in human milk and can reduce milk production in breast-feeding women. This reduction can occur at any time but is less likely to occur once breast-feeding is well-established. The developmental and health benefits of breastfeeding should be considered along with the mother's clinical need for Climara and any potential adverse effects on the breastfed child from Climara or from the underlying maternal condition. 8.4 Pediatric Use In general, Climara is not indicated for use in pediatric patients. Clinical studies have not been conducted in the pediatric population. If estrogen is administered to patients whose bone growth is not complete, periodic monitoring of bone metabolism and effects on epiphyseal centers is recommended during estrogen administration. 8.5 Geriatric Use There have not been sufficient numbers of geriatric women involved in clinical studies utilizing Climara to determine whether those over 65 years of age differ from younger subjects in their response to Climara. The Women's Health Initiative Studies In the WHI estrogen-alone substudy (daily CE [0.625 mg]-alone versus placebo), there was a higher relative risk of stroke in women greater than 65 years of age [see Clinical Studies (14.3) ] . In the WHI estrogen plus progestin substudy (daily CE [0.625 mg] plus MPA [2.5 mg] versus placebo), there was a higher relative risk of nonfatal stroke and invasive breast cancer in women greater than 65 years of age [see Clinical Studies (14.3) ] . The Women's Health Initiative Memory Study In the WHIMS ancillary studies of postmenopausal women 65 to 79 years of age, there was an increased risk of developing probable dementia in women receiving estrogen-alone or estrogen plus progestin when compared to placebo [see Warnings and Precautions (5.3) , and Clinical Studies (14.4) ] . Since both ancillary studies were conducted in women 65 to 79 years of age, it is unknown whether these findings apply to younger postmenopausal women 8 [see Warnings and Precautions (5.3) , and Clinical Studies (14.4) ] .

12.1 Mechanism of Action Endogenous estrogens are largely responsible for the development and maintenance of the female reproductive system and secondary sexual characteristics. Although circulating estrogens exist in a dynamic equilibrium of metabolic interconversions, estradiol is the principal intracellular human estrogen and is substantially more potent than its metabolites, estrone and estriol at the receptor level. The primary source of estrogen in normally cycling adult women is the ovarian follicle, which secretes 70 to 500 mcg of estradiol daily, depending on the phase of the menstrual cycle. After menopause, most endogenous estrogen is produced by conversion of androstenedione, which is secreted by the adrenal cortex, to estrone in the peripheral tissues. Thus, estrone and the sulfate conjugated form, estrone sulfate, are the most abundant circulating estrogens in postmenopausal women. Estrogens act through binding to nuclear receptors in estrogen-responsive tissues. To date, two estrogen receptors have been identified. These vary in proportion from tissue to tissue. Circulating estrogens modulate the pituitary secretion of the gonadotropins, luteinizing hormone (LH) and FSH, through a negative feedback mechanism. Estrogens act to reduce the elevated levels of these hormones seen in postmenopausal women.

11 DESCRIPTION Climara (estradiol transdermal system), is designed to release estradiol continuously upon application to intact skin. Six (6.5, 9.375, 12.5, 15, 18.75 and 25 cm 2 ) systems are available to provide nominal in vivo delivery of 0.025, 0.0375, 0.05, 0.06, 0.075 or 0.1 mg respectively of estradiol per day. The period of use is 7 days. Each system has a contact surface area of either 6.5, 9.375, 12.5, 15, 18.75 or 25 cm 2 , and contains 2, 2.85, 3.8, 4.55, 5.7 or 7.6 mg of estradiol USP respectively. The composition of the systems per unit area is identical. Estradiol USP is a white, crystalline powder, chemically described as estra-1,3,5(10)-triene-3, 17β-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.38. The structural formula is: The Climara transdermal system comprises three layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are: A translucent polyethylene film. An acrylate adhesive matrix containing estradiol USP. A protective liner of siliconized or fluoropolymer-coated polyester film is attached to the adhesive surface and must be removed before the system can be used. The active component of the transdermal system is estradiol. The remaining components of the transdermal system (acrylate copolymer adhesive, fatty acid esters, and polyethylene backing) are pharmacologically inactive. Chemical Structure Image

10 OVERDOSAGE Overdosage of estrogen may cause nausea, vomiting, breast tenderness, abdominal pain, drowsiness and fatigue, and withdrawal bleeding in women. Treatment of overdose consists of discontinuation of Climara therapy with institution of appropriate symptomatic care.

16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied Climara (estradiol transdermal system), 0.025 mg per day — each 6.5 cm 2 system contains 2 mg of estradiol USP Individual Carton of 4 systems NDC 50419-454-04 Climara (estradiol transdermal system), 0.0375 mg per day — each 9.375 cm 2 system contains 2.85 mg of estradiol USP Individual Carton of 4 systems NDC 50419-456-04 Climara (estradiol transdermal system), 0.05 mg per day — each 12.5 cm 2 system contains 3.8 mg of estradiol USP Individual Carton of 4 systems NDC 50419-451-04 Climara (estradiol transdermal system), 0.06 mg per day — each 15 cm 2 system contains 4.55 mg of estradiol USP Individual Carton of 4 systems NDC 50419-459-04 Climara (estradiol transdermal system), 0.075 mg per day — each 18.75 cm 2 system contains 5.7 mg of estradiol USP Individual Carton of 4 systems NDC 50419-453-04 Climara (estradiol transdermal system), 0.1 mg per day — each 25 cm 2 system contains 7.6 mg of estradiol USP Individual Carton of 4 systems NDC 50419-452-04 16.2 Storage and Handling Store at 20°C to 25°C (66°F to 77°F); excursions permitted between 15°C and 30°C (59°F and 86°F). Do not store above 86°F (30°C). Do not store unpouched. Apply immediately upon removal from the protective pouch. Used transdermal systems still contain active hormone. To discard, fold the sticky side of the transdermal system together, place it in a sturdy child-proof container, and place this container in the trash. Used transdermal systems should not be flushed in the toilet.