Estradiol

RECENT MAJOR CHANGES Warnings and Precautions, Malignant Neoplasms (5.2) 11/2017 Warnings and Precautions, Malignant Neoplasms (5.2) 11/2023

1 INDICATIONS AND USAGE Estradiol transdermal system, USP (twice-weekly) is indicated for: Estradiol transdermal system, USP (twice-weekly) 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 vaginal atrophy, 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 Limitations of Use : When prescribing solely for the treatment of moderate to severe symptoms of vulvar and vaginal atrophy, 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 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.

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 the shortest duration consistent with treatment goals and risks for the individual woman. Reevaluate postmenopausal women periodically as clinically appropriate to determine whether treatment is still necessary. Start therapy with estradiol transdermal system (twice-weekly) 0.0375 mg/day applied to the skin twice weekly for the treatment of moderate to severe vasomotor symptoms due to menopause or moderate to severe symptoms of vulvar and vaginal atrophy symptoms due to menopause. Dosage adjustment should be guided by the clinical response ( 2.1 , 2.2 , 2.3 ) Start therapy with estradiol transdermal system (twice-weekly) 0.025 mg/day for the prevention of postmenopausal osteoporosis ( 2.4 ) Place estradiol transdermal system (twice-weekly) on a clean, dry area of the lower abdomen or buttocks. Do not apply estradiol transdermal system (twice-weekly) to the breasts ( 2.5 ) 2.1 Treatment of Moderate to Severe Vasomotor Symptoms due to Menopause Start therapy with estradiol transdermal system (twice-weekly) 0.0375 mg per day applied to the skin twice weekly. Make dosage adjustments based on the clinical response. Initiate estradiol transdermal system (twice-weekly) at once in a woman not currently taking oral estrogens or in a woman switching from another estradiol transdermal therapy. In women who are currently taking oral estrogens, initiate treatment with estradiol transdermal system (twice-weekly) 1 week after withdrawal of oral hormone therapy, or sooner if menopausal symptoms reappear in less than 1 week. Attempts to taper or discontinue estradiol transdermal system (twice-weekly) at 3 to 6 month intervals. Give estradiol transdermal system (twice-weekly) continuously in a woman who does not have an intact uterus. In a woman with an intact uterus, give estradiol transdermal system (twice-weekly) on a cyclic schedule [for example, 3 weeks on estradiol transdermal system (twice-weekly) followed by 1 week off estradiol transdermal system (twice-weekly)]. 2.2 Treatment of Moderate to Severe Symptoms of Vulvar and Vaginal Atrophy due to Menopause Start therapy with estradiol transdermal system (twice-weekly) 0.0375 mg per day applied to the skin twice weekly. Dosage adjustment should be guided by the clinical response. Attempts to taper or discontinue estradiol transdermal system (twice-weekly) at 3 to 6 month intervals. In women not currently taking oral estrogens or in women switching from another estradiol transdermal therapy, treatment with estradiol transdermal system (twice-weekly) may be initiated at once. In women who are currently taking oral estrogens, initiate treatment with estradiol transdermal system (twice-weekly) 1 week after withdrawal of oral hormone therapy, or sooner if menopausal symptoms reappear in less than 1 week. Give estradiol transdermal system (twice-weekly) continuously in a woman who does not have an intact uterus. In a woman with an intact uterus, give estradiol transdermal system (twice-weekly) on a cyclic schedule [for example, 3 weeks on estradiol transdermal system (twice-weekly) followed by 1 week off estradiol transdermal system (twice-weekly)]. 2.3 Hypoestrogenism Due to Hypogonadism, Castration, or Primary Ovarian Failure 2.4 Prevention of Postmenopausal Osteoporosis Start therapy with estradiol transdermal system (twice-weekly) 0.025 mg per day applied to the skin twice weekly. In women not currently taking oral estrogens or in women switching from another estrad …

3 DOSAGE FORMS AND STRENGTHS Estradiol transdermal system, USP: 0.025 mg/day, 0.0375 mg/day, 0.05 mg/day, 0.075 mg/day, and 0.1 mg/day. Estradiol transdermal system, USP: 0.025 mg/day, 0.0375 mg/day, 0.05 mg/day, 0.075 mg/day, and 0.1 mg/day ( 3 )

4 CONTRAINDICATIONS Estradiol transdermal system (twice-weekly) is contraindicated in women with any of the following conditions: Undiagnosed abnormal genital bleeding [see Warnings and Precautions ( 5.2 )] . Breast cancer or a 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 and MI), or a history of these conditions [see Warnings and Precautions ( 5.1 )] . Known anaphylactic reaction, or angioedema, or hypersensitivity to estradiol transdermal system (twice-weekly) 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 and MI), or a history of these conditions ( 4 , 5.1 ) Known anaphylactic reaction, or angioedema, or hypersensitivity with estradiol transdermal system (twice-weekly) ( 4 , 5.15 ) Hepatic impairment or disease ( 4 , 5.10 ) Protein C, protein S, or antithrombin deficiency, or other known thrombophilic disorders ( 4 )

INSTRUCTIONS FOR USE Estradiol Transdermal System, USP (Twice-Weekly) (es′′ tra dye′ ol) Read this Instructions for Use before you start using estradiol transdermal system (twice-weekly) and each time you get a refill. There may be new information. This information does not take the place of talking to your healthcare provider about your menopausal symptoms or your treatment. 1. Determine Your Schedule for Your Twice-a-Week Application • Decide upon which 2 days you will change your patch. • Your estradiol transdermal system (twice-weekly) individual carton contains a calendar card printed on its inner flap. Mark the 2-day schedule you plan to follow on your carton's inner flap. • Be consistent. • If you forget to change your patch on the correct date, apply a new one as soon as you remember. • No matter what day this happens, stick to the schedule you have marked on the inner flap of your carton (your calendar card). 2. Where to Apply Estradiol Transdermal System (Twice-Weekly) • Apply patch to a dry area of the skin of the trunk of the body, including the lower abdomen, or buttocks. Avoid the waistline, since clothing may cause the patch to rub off. • Do not apply patch to breasts. • When changing your patch, based on your twice-a-week schedule, apply your new patch to a different site. Do not apply a new patch to that same area for at least 1 week. 3. Before You Apply Estradiol Transdermal System (Twice-Weekly) Make sure your skin is: • Clean (freshly washed), dry and cool. • Free of any powder, oil, moisturizer or lotion. • Free of cuts or irritations (rashes or other skin problems). 4. How to Apply Estradiol Transdermal System (Twice-Weekly) • Each patch is individually sealed in a protective pouch. • Tear open the pouch at the tear notch (do not use scissors). • Remove the patch. • Estradiol transdermal systems, USP (twice-weekly) are packaged with additional piece of protective film above the system within each pouch. This piece of protective film is removed and discarded at the time of use. • Apply the patch immediately after removing from the pouch. • Holding the patch with the rigid protective liner facing you, remove half of the liner, which covers the sticky surface of the patch. • Avoid touching the sticky side of the patch with your fingers. • Using the other half of the rigid protective liner as a handle, apply the sticky side of the patch to the selected area of the abdomen or buttocks. • Press the sticky side of the patch firmly into place. • Smooth it down. • While still holding the sticky side down, fold back the other half of the patch. • Grasp an edge of the remaining protective liner and gently pull it off. • Avoid touching the sticky side of the patch with your fingers. • Press the entire patch firmly into place with the palm of your hand. • Continue to apply pressure, with the palm of your hand over the patch, for approximately 10 seconds. • Make sure that the patch is properly adhered to your skin. • Go over the edges with your finger to ensure good contact around the patch. Note: 1. Showering will not cause your patch to fall off. 2. If your patch falls off reapply it. If you cannot reapply the patch, apply a new patch to another area and continue to follow your original placement schedule. 3. If you stop using your estradiol transdermal system (twice-weekly) patch or forget to apply a new patch as scheduled, you may have spotting, or bleeding, and recurrence of symptoms. 5. Throwing Away Your Used Patch 1. When it is time to change your patch, remove the old patch before you apply a new patch. 2. To throw away the patch, fold the sticky side of the patch together, place it in a sturdy child-proof container, and place the container in the trash. Used patches should not be flushed in the toilet. This Patient Information and Instructions for Use have been approved by the U.S. Food and Drug Administration. Manufactured by: Zydus Lifesciences Ltd. Ahmedabad, India Distributed by: Zydus Pharmaceuticals (US …

6 ADVERSE REACTIONS The following serious adverse reactions are discussed elsewhere in labeling: Cardiovascular Disorders [see Boxed Warning, Warnings and Precautions ( 5.1 )] Malignant Neoplasms [see Boxed Warning, Warnings and Precautions ( 5.2 )] The most common adverse reactions (≥10 %) with estradiol transdermal system (twice-weekly) are: headache, breast tenderness, nasopharyngitis, sinusitis, sinus headache, upper respiratory tract infection, back pain, depression, and irregular vaginal bleeding or spotting. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Zydus Pharmaceuticals (USA) Inc. at 1-877-993-8779 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. There were no clinical trials conducted with the revised formulation of estradiol transdermal system (twice-weekly). The revised formulation of estradiol transdermal system (twice-weekly) is bioequivalent to the original formulation of estradiol transdermal system (twice-weekly). The following adverse reactions have been reported with estradiol transdermal system (twice-weekly) therapy: Table 1 Summary of Most Frequently Reported Adverse Reactions Regardless of Relationship Reported at a Frequency ≥5 Percent Estradiol transdermal system (twice-weekly) Placebo (N=157) N (%) 0.025 mg/day † (N=47) N (%) 0.0375 mg/day † (N=130) N (%) 0.05 mg/day † (N=103) N (%) 0.075 mg/day † (N=46) N (%) 0.1 mg/day † (N=132) N (%) Gastrointestinal disorders Constipation 2 (4.3) 5 (3.8) 4 (3.9) 3 (6.5) 2 (1.5) 4 (2.5) Dyspepsia 4 (8.5) 12 (9.2) 3 (2.9) 2 (4.3) 0 10 (6.4) Nausea 2 (4.3) 8 (6.2) 4 (3.9) 0 7 (5.3) 5 (3.2) General disorders and administration site conditions *** Influenza-like illness 3 (6.4) 6 (4.6) 8 (7.8) 0 3 (2.3) 10 (6.4) Pain NOS* 0 8 (6.2) 0 2 (4.3) 7 (5.3) 7 (4.5) Infections and infestations Influenza 4 (8.5) 4 (3.1) 6 (5.8) 0 10 (7.6) 14 (8.9) Nasopharyngitis 3 (6.4) 16 (12.3) 10 (9.7) 9 (19.6) 11 (8.3) 24 (15.3) Sinusitis NOS* 4 (8.5) 17 (13.1) 13 (12.6) 3 (6.5) 7 (5.3) 16 (10.2) Upper respiratory tract infection NOS* 3 (6.4) 8 (6.2) 11 (10.7) 4 (8.7) 6 (4.5) 9 (5.7) Investigations Weight increased 4 (8.5) 5 (3.8) 2 (1.9) 2 (4.3) 0 3 (1.9) Musculoskeletal and connective tissue disorders Arthralgia 0 11 (8.5) 4 (3.9) 2 (4.3) 5 (3.8) 9 (5.7) Back pain 4 (8.5) 10 (7.7) 9 (8.7) 4 (8.7) 14 (10.6) 10 (6.4) Neck pain 3 (6.4) 4 (3.1) 4 (3.9) 0 6 (4.5) 2 (1.3) Pain in limb 0 10 (7.7) 7 (6.8) 2 (4.3) 6 (4.5) 9 (5.7) Nervous system disorders Headache NOS* 7 (14.9) 35 (26.9) 32 (31.1) 23 (50.0) 34 (25.8) 37 (23.6) Sinus headache 0 12 (9.2) 5 (4.9) 5 (10.9) 2 (1.5) 8 (5.1) Psychiatric disorders Anxiety NEC** 3 (6.4) 5 (3.8) 0 0 2 (1.5) 4 (2.5) Depression 5 (10.6) 4 (3.1) 7 (6.8) 0 4 (3.0) 6 (3.8) Insomnia 3 (6.4) 6 (4.6) 4 (3.9) 2 (4.3) 2 (1.5) 9 (5.7) Reproductive system and breast disorders Breast tenderness 8 (17.0) 10 (7.7) 8 (7.8) 3 (6.5) 17 (12.9) 0 Dysmenorrhea 0 0 0 3 (6.5) 0 0 Intermenstrual bleeding 3 (6.4) 9 (6.9) 6 (5.8) 0 14 (10.6) 7 (4.5) Respiratory, thoracic and mediastinal disorders Sinus congestion 0 4 (3.1) 3 (2.9) 3 (6.5) 6 (4.5) 7 (4.5) Vascular disorders Hot flushes NOS* 3 (6.4) 0 3 (2.9) 0 0 6 (3.8) Hypertension NOS* 2 (4.3) 0 3 (2.9) 0 0 2 (1.3) † Represents milligrams of estradiol delivered daily by each system. * NOS represents not otherwise specified. ** NEC represents not elsewhere classified. *** Application site erythema and application site irritation were observed in a small number of patients (3.2% or less of patients across treatment groups). 6.2 Postmarketing Experience The following additional adverse reactions have been identified during post-approval use of estradiol transdermal system (twice-weekly). Because these reactions are reported voluntari …

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 Estradiol transdermal system (twice-weekly) is not indicated for use in pregnancy. There are no data with the use of estradiol transdermal system (twice-weekly) 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 (estrogen 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 estradiol transdermal system (twice-weekly) and any potential adverse effects on the breastfed child from estradiol transdermal system (twice-weekly) or from the underlying maternal condition. 8.4 Pediatric Use Estradiol transdermal system (twice-weekly) 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 maturation 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 estradiol transdermal system (twice-weekly) to determine whether those over 65 years of age differ from younger subjects in their response to estradiol transdermal system (twice-weekly). 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 Warnings and Precautions ( 5.1 ), and 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 Warnings and Precautions ( 5.1 ), and 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, 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 follicle stimulating hormone (FSH) through a negative feedback mechanism. Estrogens act to reduce the elevated concentrations of these hormones seen in postmenopausal women.

11 DESCRIPTION Estradiol transdermal system, USP (twice-weekly) contains estradiol in a multipolymeric adhesive. The system is designed to release estradiol continuously upon application to intact skin. Five dosage strengths of estradiol transdermal system, USP (twice-weekly) are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol per day via the skin. Each corresponding system has an active surface area of 2.7, 4.05, 5.40, 8.1, or 10.8 cm 2 and contains 0.405, 0.608, 0.810, 1.215, or 1.620 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. The structural formula is: The molecular formula of estradiol is C 18 H 24 O 2 . The molecular weight is 272.39 g/mol. Estradiol transdermal system, USP (twice-weekly) is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) a translucent polyethylene film (2) an adhesive formulation containing estradiol, acrylic adhesive, colloidal silicon dioxide, oleic acid, povidone, propylene glycol, and silicone adhesive and (3) a fluoropolymer coated polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. Estradiol transdermal systems, USP (twice-weekly) are packaged with additional piece of protective film above the system within each pouch. This piece of protective film is removed and discarded at the time of use. The active component of the system is estradiol. The remaining components of the system are pharmacologically inactive. FDA approved drug release test specifications differ from USP. structure tds-layers

10 OVERDOSAGE Overdosage of estrogen may cause nausea, vomiting, breast tenderness, abdominal pain, drowsiness and fatigue, and withdrawal bleeding may occur in women. Treatment of overdose consists of discontinuation of estradiol transdermal system (twice-weekly) therapy with institution of appropriate symptomatic care.

16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied Estradiol transdermal system, 0.025 mg per day – each 2.5 cm 2 system contains 0.39 mg of estradiol USP for nominal* delivery of 0.025 mg of estradiol per day. Patient Calendar Pack of 8 Systems.........................................................................NDC 0781-7129-83 Package of 24 Systems (3 Patient Calendar Packs of 8 Systems)............................ NDC 0781-7129-40 Estradiol transdermal system, 0.0375 mg per day – each 3.75 cm 2 system contains 0.585 mg of estradiol USP for nominal* delivery of 0.0375 mg of estradiol per day. Patient Calendar Pack of 8 Systems......................................................................... NDC 0781-7138-83 Package of 24 Systems (3 Patient Calendar Packs of 8 Systems)............................ NDC 0781-7138-40 Estradiol transdermal system, 0.05 mg per day – each 5.0 cm 2 system contains 0.78 mg of estradiol USP for nominal* delivery of 0.05 mg of estradiol per day. Patient Calendar Pack of 8 Systems......................................................................... NDC 0781-7144-83 Package of 24 Systems (3 Patient Calendar Packs of 8 Systems)............................ NDC 0781-7144-40 Estradiol transdermal system, 0.075 mg per day – each 7.5 cm 2 system contains 1.17 mg of estradiol USP for nominal* delivery of 0.075 mg of estradiol per day. Patient Calendar Pack of 8 Systems......................................................................... NDC 0781-7156-83 Package of 24 Systems (3 Patient Calendar Packs of 8 Systems)............................ NDC 0781-7156-40 Estradiol transdermal system, 0.1 mg per day – each 10.0 cm 2 system contains 1.56 mg of estradiol USP for nominal* delivery of 0.1 mg of estradiol per day. Patient Calendar Pack of 8 Systems......................................................................... NDC 0781-7167-83 Package of 24 Systems (3 Patient Calendar Packs of 8 Systems)............................ NDC 0781-7167-40 [*see DESCRIPTION ( 11 )] 16.2 Storage and Handling Store at 20 to 25°C (68 to 77°F). Excursions permitted to 15 to 30°C (59 to 86°F). [See USP Controlled Room Temperature.] 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.

16.1 How Supplied Estradiol transdermal system, 0.025 mg per day – each 2.5 cm 2 system contains 0.39 mg of estradiol USP for nominal* delivery of 0.025 mg of estradiol per day. Patient Calendar Pack of 8 Systems.........................................................................NDC 0781-7129-83 Package of 24 Systems (3 Patient Calendar Packs of 8 Systems)............................ NDC 0781-7129-40 Estradiol transdermal system, 0.0375 mg per day – each 3.75 cm 2 system contains 0.585 mg of estradiol USP for nominal* delivery of 0.0375 mg of estradiol per day. Patient Calendar Pack of 8 Systems......................................................................... NDC 0781-7138-83 Package of 24 Systems (3 Patient Calendar Packs of 8 Systems)............................ NDC 0781-7138-40 Estradiol transdermal system, 0.05 mg per day – each 5.0 cm 2 system contains 0.78 mg of estradiol USP for nominal* delivery of 0.05 mg of estradiol per day. Patient Calendar Pack of 8 Systems......................................................................... NDC 0781-7144-83 Package of 24 Systems (3 Patient Calendar Packs of 8 Systems)............................ NDC 0781-7144-40 Estradiol transdermal system, 0.075 mg per day – each 7.5 cm 2 system contains 1.17 mg of estradiol USP for nominal* delivery of 0.075 mg of estradiol per day. Patient Calendar Pack of 8 Systems........................................................................ …