Estradiol 1 mg Tablet, 30-count
Other active recalls for Estradiol (different manufacturers) — 4 · tap to view
🆔 Identity & classification
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🏷️ RxNorm drug class
This medicine belongs to the Radioactive Diagnostic Agent class.
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🏭 Manufacturer & labeler
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🩺 Clinical
Estrogen may be used for the following: to treat hot flushes ('hot flashes'; sudden strong feelings of heat and sweating) in women who are experiencing menopause ('change of life', the end of monthly menstrual periods) to treat vaginal dryness, itching, or burning to prevent osteoporosis (a condition in which the bones become thin and weak and break easily) in women who are experiencing or have experienced menopause to relieve symptoms of low estrogen in young women who do not produce enough estrogen naturally to relieve the symptoms of certain types of breast and prostate (a male repro...
Read the full MedlinePlus article ↗- Estradiol is a form of estrogen — the main female sex hormone. When estrogen levels fall after menopause (or due to other conditions like ovarian failure), you can get symptoms lik...
- What exactly is estradiol and why has my doctor prescribed it?
- Apply the patch to a clean, dry area of skin — usually the lower abdomen. Never put it on your breasts. Press it firmly in place and leave it on for the full wear period — once a w...
- How do I use my estradiol patch correctly?
Patient education
Supplement & herbal interactions
Some supplements/herbs that may interact with Estradiol — tap one for details:
Estradiol may be associated with lower levels of 5 nutrients — worth a chat with your pharmacist, not a cause for alarm.
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Ask a licensed pharmacist directly — free, answered by our team.
💊 What it looks like
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🧪 Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.
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UNII OP1R32D61U
Microcrystalline cellulose is a purified form of cellulose, a natural fiber from plant sources. It acts as a binder and filler in tablets and capsules, helping hold ingredients together and give the medicine its shape and size.
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UNII 2LRS185U6K
D&C Red No. 27 is a synthetic red colorant used in medicines and cosmetics. It gives tablets, capsules, or liquids their red or reddish color so products are visually identifiable.
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UNII H3R47K3TBD
FD&C Blue No. 1 is a synthetic blue dye approved for use in foods and medicines. It serves as a colorant to give the medication its distinctive appearance and help with product identification.
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UNII EWQ57Q8I5X
Lactose monohydrate is a natural sugar derived from milk. It serves as a filler and binder in tablets and capsules, helping create the proper size, texture, and consistency of the medicine.
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UNII 70097M6I30
Magnesium stearate is a salt made from magnesium and stearic acid, a fatty substance. It's used in tablets and capsules as a lubricant and glidant to help ingredients flow smoothly during manufacturing and prevent sticking.
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UNII ETJ7Z6XBU4
Silicon dioxide is a naturally occurring mineral used as a glidant and anti-caking agent. It helps powder ingredients flow smoothly and prevents clumping during manufacturing and storage.
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UNII 5856J3G2A2
A starch-based powder made from potatoes and processed with sodium. It acts as a disintegrant, helping the tablet or capsule break apart quickly in the stomach so the medicine can be absorbed.
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UNII O8232NY3SJ
A plant-based carbohydrate derived from corn kernels. It acts as a filler to add bulk, a binder to hold ingredients together, and a disintegrant to help the tablet break apart in your stomach for absorption.
8 inactive ingredients listed in the exact product block matched to this NDC.
Where does this data come from?
ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
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💲 Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per each | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data. | |
| Medicare drug plans payPart D · Q2 2026 | $0.1552 | $4.66 / 30 tablets |
Where does this data come from?
🔁 Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Estradiol 1 mg 00555-0886-02 | Teva | 100 tablets | $0.064 | AB | Availability likely | — |
| Estradiol 1 mg 24658-0703-01 | PURACAP | 100 tablets | $0.064 | AB | Availability likely | — |
| Estradiol 1 mg 42806-0088-01 | EPIC | 100 tablets | $0.064 | AB | Availability likely | — |
| Estradiol 1 mg 60687-0876-65 | American | 50 tablets | $0.064 | AB | Availability likely | — |
| Estradiol 1 mg 70954-0565-10 | ANI | 100 tablets | $0.064 | AB | Availability likely | — |
| Estradiol 1 mg 72603-0274-01 | NorthStar | 100 tablets | $0.064 | AB | Availability likely | — |
| Estradiol 1 mg 50090-1704-00 | A-S | 30 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 50090-6359-00 | A-S | 30 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 50090-6847-00 | A-S | 90 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 50090-7452-00 | A-S | 90 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 50090-7480-00 | A-S | 30 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 50090-7481-00 | A-S | 90 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 51655-0229-26 | Northwind | 90 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 54348-0701-30 | PharmPak, | 30 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 63187-0741-30 | Proficient | 30 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 68071-2487-03 | NuCare | 30 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 68071-3394-02 | NuCare | 120 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 68071-3629-03 | NuCare | 30 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 68788-7102-01 | Preferred | 100 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 68788-8860-01 | Preferred | 100 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 70518-3818-00 | REMEDYREPACK | 90 tablets | — | AB | FDA listed | — |
| Estradiol 1 mgthis 70518-3922-00 | REMEDYREPACK | 30 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 71335-0445-01 | Bryant | 100 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 71335-0797-01 | Bryant | 100 tablets | — | AB | Discontinued | — |
| Estradiol 1 mg 71335-2387-01 | Bryant | 100 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 72189-0502-60 | Direct_Rx | 60 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 72789-0299-90 | PD-Rx | 90 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 76420-0022-10 | Asclemed | 100 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 82868-0038-30 | Northwind | 30 tablets | — | AB | FDA listed | — |
| Estradiol 1 mg 67296-2279-09 | Redpharm | 90 tablets | — | AB | FDA listed | — |
Where does this data come from?
⏳ Availability & generic status
This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.
Where does this data come from?
📊 Medicare Part D spend CMS · PART D · 2026 (Q1)
📦 Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Status |
|---|---|---|---|
| 70518-3922-00 You're viewing this | 30 TABLET in 1 BLISTER PACK (70518-3922-0) | 2023-11-22 | Active |
| 70518-3922-01 | 90 TABLET in 1 BOTTLE, PLASTIC (70518-3922-1) | 2025-01-13 | Active |
You're viewing the smallest of 2 pack sizes for this product.
Pack size FAQ
What quantity is in NDC 70518-3922-00?
What is the difference between NDC 70518-3922-00 and NDC 70518-3922-01?
What NDC number is used to bill for this package of Estradiol 1 mg Tablet?
🧭 About this NDC listing & data coverage
What data is (and isn’t) available for this NDC — tap to expand
| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | ✓ Available |
| Inactive ingredients (structured) | ✓ Available |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | ✓ Available |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold. |
Questions about this listing
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Is the NDC printed on the package the same as the 11-digit billing NDC?
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Do I need a prescription for this product?
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📄 Full prescribing information FDA SPL
🚨 Boxed Warning ▾
BOXED WARNING ESTROGENS INCREASE THE RISK OF ENDOMETRIAL CANCER Close clinical surveillance of all women taking estrogens is important. Adequate diagnostic measures, including endometrial sampling when indicated, should be undertaken to rule out malignancy in all cases of undiagnosed persistent or recurring abnormal vaginal bleeding. There is no evidence that the use of “natural” estrogens results in a different endometrial risk profile than “synthetic” estrogens at equivalent estrogen doses.
(See WARNINGS, Malignant neoplasms, Endometrial cancer .) CARDIOVASCULAR AND OTHER RISKS Estrogens with or without progestins should not be used for the prevention of cardiovascular disease. (See WARNINGS, Cardiovascular disorders .) The Women’s Health Initiative (WHI) study reported increased risks of myocardial infarction, stroke, invasive breast cancer, pulmonary emboli, and deep vein thrombosis in postmenopausal women (50 to 79 years of age) during 5 years of treatment with oral conjugated estrogens (CE 0.625 mg) combined with medroxyprogesterone acetate (MPA 2.5 mg) relative to placebo.
(See CLINICAL PHARMACOLOGY, Clinical Studies. ) The Women’s Health Initiative Memory Study (WHIMS), a substudy of WHI, reported increased risk of developing probable dementia in postmenopausal women 65 years of age or older during 4 years of treatment with oral conjugated estrogens plus medroxyprogesterone acetate relative to placebo. It is unknown whether this finding applies to younger postmenopausal women or to women taking estrogen alone therapy. (See CLINICAL PHARMACOLOGY, Clinical Studies. ) Other doses of oral conjugated estrogens with medroxyprogesterone acetate, and other combinations and dosage forms of estrogens and progestins were not studied in the WHI clinical trials and, in the absence of comparable data, these risks should be assumed to be similar.
Because of these risks, estrogens with or without progestins should be prescribed at the lowest effective doses and for the shortest duration consistent with treatment goals and risks for the individual woman.
🎯 Indications and Usage ▾
INDICATIONS & USAGE Estradiol tablets are indicated in the: Treatment of moderate to severe vasomotor symptoms associated with the menopause. Treatment of moderate to severe symptoms of vulvar and vaginal atrophy associated with the menopause. When prescribing solely for the treatment of symptoms of vulvar and vaginal atrophy, topical vaginal products should be considered.
Treatment of hypoestrogenism due to hypogonadism, castration or primary ovarian failure. Treatment of breast cancer (for palliation only) in appropriately selected women and men with metastatic disease. Treatment of advanced androgen-dependent carcinoma of the prostate (for palliation only).
Prevention of osteoporosis. When prescribing solely for the prevention of postmenopausal osteoporosis, therapy should only be considered for women at significant risk of osteoporosis and for whom non-estrogen medications are not considered to be appropriate. (See CLINICAL PHARMACOLOGY , Clinical Studies. ) The mainstays for decreasing the risk of postmenopausal osteoporosis are weight bearing exercise, adequate calcium and vitamin D intake, and when indicated, pharmacologic therapy.
Postmenopausal women require an average of 1500 mg/day of elemental calcium. Therefore, when not contraindicated, calcium supplementation may be helpful for women with suboptimal dietary intake. Vitamin D supplementation of 400 to 800 IU/day may also be required to ensure adequate daily intake in postmenopausal women.
⏱️ Dosage and Administration ▾
DOSAGE & ADMINISTRATION When estrogen is prescribed for a postmenopausal woman with a uterus, a progestin should also be initiated to reduce the risk of endometrial cancer. A woman without a uterus does not need progestin. Use of estrogen, alone or in combination with a progestin, should be with the lowest effective dose and for the shortest duration consistent with treatment goals and risks for the individual woman.
Patients should be reevaluated periodically as clinically appropriate (e.g., 3-month to 6-month intervals) to determine if treatment is still necessary (see BOXED WARNINGS and WARNINGS ). For women who have a uterus, adequate diagnostic measures, such as endometrial sampling, when indicated, should be undertaken to rule out malignancy in cases of undiagnosed persistent or recurring abnormal vaginal bleeding. Patients should be started at the lowest dose for the indication.
1. For treatment of moderate to severe vasomotor symptoms, vulval and vaginal atrophy associated with the menopause, the lowest dose and regimen that will control symptoms should be chosen and medication should be discontinued as promptly as possible. Attempts to discontinue or taper medication should be made at 3-month to 6-month intervals.
The usual initial dosage range is 1 to 2 mg daily of estradiol adjusted as necessary to control presenting symptoms. The minimal effective dose for maintenance therapy should be determined by titration. Administration should be cyclic (e.g., 3 weeks on and 1 week off).
2. For treatment of female hypoestrogenism due to hypogonadism, castration, or primary ovarian failure. Treatment is usually initiated with a dose of 1 to 2 mg daily of estradiol, adjusted as necessary to control presenting symptoms; the minimal effective dose for maintenance therapy should be determined by titration.
3. For treatment of breast cancer, for palliation only, in appropriately selected women and men with metastatic disease. Suggested dosage is 10 mg three times daily for a period of at least three months.
4. For treatment of advanced androgen-dependent carcinoma of the prostate, for palliation only. Suggested dosage is 1 to 2 mg three times daily.
The effectiveness of therapy can be judged by phosphatase determinations as well as by symptomatic improvement of the patient. 5. For prevention of osteoporosis.
When prescribing solely for the prevention of postmenopausal osteoporosis, therapy should be considered only for women at significant risk of osteoporosis and for whom non-estrogen medications are not considered to be appropriate. The lowest effective dose of estradiol has not been determined.
⛔ Contraindications ▾
CONTRAINDICATIONS Estrogens should not be used in individuals with any of the following conditions: Undiagnosed abnormal genital bleeding. Known, suspected or history of cancer of the breast except in appropriately selected patients being treated for metastatic disease. Known or suspected estrogen-dependent neoplasia.
Active deep vein thrombosis, pulmonary embolism or history of these conditions. Active or recent (e.g., within the past year) arterial thromboembolic disease (e.g., stroke, myocardial infarction. Liver dysfunction or disease.
Estradiol tablets should not be used in patients with known hypersensitivity to its ingredients. Known or suspected pregnancy. There is no indication for estradiol tablets in pregnancy.
There appears to be little or no increased risk of birth defects in children born to women who have used estrogens and progestins from oral contraceptives inadvertently during early pregnancy. (See PRECAUTIONS .)
⚠️ Warnings ▾
WARNINGS See BOXED WARNINGS. 1. Cardiovascular disorders Estrogen and estrogen/progestin therapy has been associated with an increased risk of cardiovascular events such as myocardial infarction and stroke, as well as venous thrombosis and pulmonary embolism (venous thromboembolism or VTE).
Should any of these occur or be suspected estrogens should be discontinued immediately. Risk factors for arterial vascular disease (e.g., hypertension, diabetes mellitus, tobacco use, hypercholesterolemia, and obesity) and/or venous thromboembolism (e.g., personal history or family history of VTE, obesity, and systemic lupus erythematosus) should be managed appropriately. a. Coronary heart disease and stroke In the Women’s Health Initiative (WHI) study, an increase in the number of myocardial infarctions and strokes has been observed in women receiving CE compared to placebo.
These observations are preliminary, and the study is continuing . (See CLINICAL PHARMACOLOGY, Clinical Studies .) In the CE/MPA substudy of WHI, an increased risk of coronary heart disease (CHD) events (defined as nonfatal myocardial infarction and CHD death) was observed in women receiving CE/MPA compared to women receiving placebo (37 vs 30 per 10,000 women-years). The increase in risk was observed in year one and persisted.
In the same substudy of WHI, an increased risk of stroke was observed in women receiving CE/MPA compared to women receiving placebo (29 vs 21 per 10,000 women-years). The increase in risk was observed after the first year and persisted. In postmenopausal women with documented heart disease (n = 2,763, average age 66.7 years) a controlled clinical trial of secondary prevention of cardiovascular disease (Heart and Estrogen/Progestin Replacement Study; HERS) treatment with CE/MPA (0.625 mg/2.5 mg per day) demonstrated no cardiovascular benefit.
During an average follow-up of 4.1 years, treatment with CE/MPA did not reduce the overall rate of CHD events in postmenopausal women with established coronary heart disease. There were more CHD events in the CE/MPA-treated group than in the placebo group in year 1, but not during the subsequent years. Two thousand three hundred and twenty one women from the original HERS trial agreed to participate in an open label extension of HERS, HERS II.
Average follow-up in HERS II was an additional 2.7 years, for a total of 6.8 years overall. Rates of CHD events were comparable among women in the CE/MPA group and the placebo group in HERS, HERS II, and overall. Large doses of estrogen (5 mg conjugated estrogens per day), comparable to those used to treat cancer of the prostate and breast, have been shown in a large prospective clinical trial in men to increase the risks of nonfatal myocardial infarction, pulmonary embolism, and thrombophlebitis. b.
Venous thromboembolism (VTE) In the Women’s Health Initiative (WHI) study, an increase in VTE has been observed in women receiving CE compared to placebo. These observations are preliminary, and the study is continuing. (See CLINICAL PHARMACOLOGY, Clinical Studies .) In the CE/MPA substudy of WHI, a 2 fold greater rate of VTE, including deep venous thrombosis and pulmonary embolism, was observed in women receiving CE/MPA compared to women receiving placebo.
The rate of VTE was 34 per 10,000 women-years in the CE/MPA group compared to 16 per 10,000 women-years in the placebo group. The increase in VTE risk was observed during the first year and persisted. If feasible, estrogens 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.
2. Malignant neoplasms a. Endometrial cancer The use of unopposed estrogens in women with intact uteri has been associated with an increased risk of endometrial cancer.
The reported endometrial cancer risk among unopposed estrogen users is about 2- to 12- fold greater than in non-users, and appears dependent on duration of treatmen…
🤒 Adverse Reactions ▾
ADVERSE REACTIONS See BOXED WARNINGS, WARNINGS , and PRECAUTIONS . The following additional adverse reactions have been reported with estrogen and/or progestin therapy. 1.
Genitourinary system Changes in vaginal bleeding pattern and abnormal withdrawal bleeding or flow; breakthrough bleeding, spotting, dysmenorrhea Increase in size of uterine leiomyomata Vaginitis, including vaginal candidiasis Change in amount of cervical secretion Changes in cervical ectropion Ovarian cancer; endometrial hyperplasia; endometrial cancer 2. Breasts Tenderness, enlargement, pain, nipple discharge, galactorrhea; fibrocystic breast changes; breast cancer 3. Cardiovascular Deep and superficial venous thrombosis; pulmonary embolism; thrombophlebitis; myocardial infarction; stroke; increase in blood pressure 4.
Gastrointestinal Nausea, vomiting Abdominal cramps, bloating Cholestatic jaundice Increased incidence of gallbladder disease Pancreatitis Enlargement of hepatic hemangiomas 5. Skin Chloasma or melasma that may persist when drug is discontinued Erythema multiforme Erythema nodosum Hemorrhagic eruption Loss of scalp hair Hirsutism Pruritus, rash 6. Eyes Retinal vascular thrombosis Steepening of corneal curvature Intolerance to contact lenses 7.
Central Nervous System Headache, migraine, dizziness Mental depression Chorea Nervousness, mood disturbances, irritability Exacerbation of epilepsy Dementia 8. Miscellaneous Increase or decrease in weight Reduced carbohydrate tolerance Aggravation of porphyria Edema Arthralgias; leg cramps Changes in libido Urticaria Angioedema Anaphylactoid/anaphylactic reactions Hypocalcemia Exacerbation of asthma Increased triglycerides To report SUSPECTED ADVERSE REACTIONS, contact ANI Pharmaceuticals, Inc. at 1-855-204-1431 or FDA at 1-800-FDA-1088 or http://www.fda.gov/medwatch.
🔄 Drug / Laboratory Test Interactions ▾
D. Drug/Laboratory Test Interactions Accelerated prothrombin time, partial thromboplastin time, and platelet aggregation time; increased platelet count; increased factors II, VII antigen, VIII antigen, VIII coagulant activity, IX, X, XII, VII-X complex, II-VII-X complex, and betathromboglobulin; decreased levels of anti-factor Xa and antithrombin III, decreased antithrombin III activity; increased levels of fibrinogen and fibrinogen activity; increased plasminogen antigen and activity. Increased thyroid-binding globulin (TBG) leading to increased circulating total thyroid hormone, as measured by protein-bound iodine (PBI), T 4 levels (by column or by radioimmunoassay) or T 3 levels by radioimmunoassay.
T 3 resin uptake is decreased, reflecting the elevated TBG. Free T 4 and free T 3 concentrations are unaltered. Patients on thyroid replacement therapy may require higher doses of thyroid hormone.
Other binding proteins may be elevated in serum, i.e., corticosteroid binding globulin (CBG), sex hormone-binding globulin (SHBG), leading to increased circulating corticosteroids and sex steroids, respectively. Free hormone concentrations may be decreased. Other plasma proteins may be increased (angiotensinogen/renin substrate, alpha-1-antitrypsin, ceruloplasmin).
Increased plasma HDL and HDL 2 subfraction concentrations, reduced LDL cholesterol concentration, increased triglycerides levels. Impaired glucose tolerance. Reduced response to metyrapone test.
🤰 Pregnancy ▾
F. Pregnancy Estradiol tablets should not be used during pregnancy. (See CONTRAINDICATIONS . )
🧒 Pediatric Use ▾
H. Pediatric Use Safety and effectiveness in pediatric patients have not been established. Large and repeated doses of estrogen over an extended period of time have been shown to accelerate epiphyseal closure, resulting in short adult stature if treatment is initiated before the completion of physiologic puberty in normally developing children.
In patients in whom bone growth is not complete, periodic monitoring of bone maturation and effects on epiphyseal centers is recommended. Estrogen treatment of prepubertal children also induces premature breast development and vaginal cornification, and may potentially induce vaginal bleeding in girls. In boys, estrogen treatment may modify the normal pubertal process.
All other physiological and adverse reactions shown to be associated with estrogen treatment of adults could potentially occur in the pediatric population, including thromboembolic disorders and growth stimulation of certain tumors. Therefore, estrogens should only be administered to pediatric patients when clearly indicated and the lowest effective dose should always be utilized.
🧓 Geriatric Use ▾
I. Geriatric Use The safety and efficacy of estradiol tablets in geriatric patients has not been established. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greatest frequency of decreased hepatic, renal or cardiac function, and of concomitant disease or other drug therapy.
In the Women’s Health Initiative Memory Study, including 4,532 women 65 years of age and older, followed for an average of 4 years, 82% (n = 3,729) were 65 to 74 while 18% (n = 803) were 75 and over. Most women (80%) had no prior hormone therapy use. Women treated with conjugated estrogens plus medroxyprogesterone acetate were reported to have a two-fold increase in the risk of developing probable dementia.
Alzheimer’s disease was the most common classification of probable dementia in both the conjugated estrogens plus medroxyprogesterone acetate group and the placebo group. Ninety percent of the cases of probable dementia occurred in the 54% of women that were older than 70. (See WARNINGS, Dementia . ) It is unknown whether these findings apply to estrogen alone therapy.
🆘 Overdosage ▾
OVERDOSAGE Serious ill effects have not been reported following acute ingestion of large doses of estrogen-containing oral contraceptives by young children. Overdosage of estrogen may cause nausea and vomiting, and withdrawal bleeding may occur in females.
🧬 Clinical Pharmacology ▾
CLINICAL PHARMACOLOGY 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 by 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 levels of these hormones seen in postmenopausal women. Pharmacokinetics Distribution The distribution of exogenous estrogens is similar to that of endogenous estrogens. Estrogens are widely distributed in the body and are generally found in higher concentrations in the sex hormone target organs.
Estrogens circulate in the blood largely bound to sex hormone binding globulin (SHBG) and albumin. Metabolism Exogenous estrogens are metabolized in the same manner as endogenous estrogens. Circulating estrogens exist in a dynamic equilibrium of metabolic interconversions.
These transformations take place mainly in the liver. Estradiol is converted reversibly to estrone, and both can be converted to estriol, which is the major urinary metabolite. Estrogens also undergo enterohepatic recirculation via sulfate and glucuronide conjugation in the liver, biliary secretion of conjugates into the intestine, and hydrolysis in the gut followed by reabsorption.
In postmenopausal women, a significant proportion of the circulating estrogens exist as sulfate conjugates, especially estrone sulfate, which serves as a circulating reservoir for the formation of more active estrogens. Excretion Estradiol, estrone, and estriol are excreted in the urine along with glucuronide and sulfate conjugates. Special Populations No pharmacokinetic studies were conducted in special populations, including patients with renal or hepatic impairment.
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 preparations (Hypericum perforatum), 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 side effects. Clinical Studies Osteoporosis Most prospective studies of efficacy for this indication have been carried out in white menopausal women, without stratification by other risk factors, and tend to show a universally salutary effect on bone.
The results of a two-year, randomized, placebo-controlled, double-blind, dose-ranging study have shown that treatment with 0.5 mg estradiol daily for 23 days (of a 28 day cycle) prevents vertebral bone mass loss in postmenopausal women. When estrogen therapy is discontinued, bone mass declines at a rate comparable to the immediate postmenopausal pe…
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED Estradiol Tablets, USP are available as: 1 mg: Light purple, oval, flat-faced, beveled-edge, scored tablet debossed with N and 565 on the scored side and plain on the other side, packaged in NDC: 70518-3922-00 NDC: 70518-3922-01 PACKAGING: 30 in 1 BLISTER PACK PACKAGING: 90 in 1 BOTTLE PLASTIC 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]. Dispense in a tight, light-resistant container as defined in the USP, with a child-resistant closure (as required).
KEEP THIS AND ALL MEDICATIONS OUT OF THE REACH OF CHILDREN. Repackaged and Distributed By: Remedy Repack, Inc. 625 Kolter Dr.
Suite #4 Indiana, PA 1-724-465-8762
📋 Description ▾
DESCRIPTION Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W.
272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no.
27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no.
10 aluminum lake. FDA approved dissolution test specifications differ from USP. structure
💬 Information for Patients ▾
B. Patient Information Physicians are advised to discuss the PATIENT INFORMATION leaflet with patients for whom they prescribe estradiol tablets. Repackaged By / Distributed By: RemedyRepack Inc. 625 Kolter Drive, Indiana, PA 15701 (724) 465-8762