Estrace (Estradiol)
Estrace is a brand of bioidentical oral estradiol tablets and vaginal cream used in menopausal hormone replacement therapy. Authorised generic estradiol products are widely available and clinically equivalent at the same strength and route.
- Active ingredients
- Estradiol
- Manufacturer
- Allergan / AbbVie
- Dosage forms
- tablet, cream
- Available dosages
- 0.5mg, 1mg, 2mg
- Category
- Hormones and Birth Control
What is it?
Estrace is one of the long-established brand names for oral estradiol tablets and 0.01% vaginal cream, originally launched by Mead Johnson, currently marketed in the US by Allergan (AbbVie). Authorised generic estradiol tablets in 0.5, 1 and 2mg strengths are widely available and dominate prescribing in most markets. Estrace remains a commonly recognised name in the US, particularly for the vaginal cream formulation used for urogenital atrophy.
Active ingredients
Each Estrace tablet contains 0.5mg, 1mg or 2mg of bioidentical 17β-estradiol. The vaginal cream contains 0.1mg of estradiol per gram. The active substance is identical between branded Estrace and authorised generic estradiol at the same strength, with bioequivalence required by the regulator.
Forms and dosages
Estrace is supplied as oral tablets in 0.5, 1 and 2mg strengths and as 0.01% vaginal cream. Menopausal HRT typically starts at the lowest effective dose — 0.5–1mg orally — and titrates based on symptom relief. Vaginal cream is applied 2–4g daily for two weeks then 1g 1–3 times weekly for maintenance. Women with an intact uterus require concomitant progesterone to prevent endometrial hyperplasia.
Indications
Estrace tablets are approved for moderate-to-severe vasomotor menopausal symptoms, prevention of post-menopausal osteoporosis (when other agents unsuitable), female hypogonadism, and as part of feminising hormone therapy. Vaginal cream is approved for moderate-to-severe symptomatic urogenital atrophy. Off-label use in transgender women under specialist supervision is widespread.
How it works
Estradiol binds to estrogen receptors (ERα and ERβ) in target tissues and modulates gene expression for vascular, bone, reproductive, central nervous system and metabolic functions. In menopausal HRT, it relieves vasomotor symptoms and urogenital atrophy and reduces bone resorption. Oral estradiol undergoes extensive first-pass metabolism, raising estrone levels and hepatic protein synthesis; vaginal cream produces predominantly local effect with limited systemic exposure at maintenance doses.
Frequently asked questions
Is Estrace tablets the same as estradiol patches? ▾
Same active hormone, different pharmacology. Oral Estrace produces high estrone levels and increased clotting factor synthesis through first-pass hepatic metabolism. Estradiol patches bypass first pass and give lower thrombotic risk. According to current menopause guidelines, transdermal estradiol is preferred when clotting risk is elevated; oral Estrace remains a reasonable option in lower-risk patients.
Why do I need progesterone with Estrace tablets? ▾
Unopposed estrogen stimulates the endometrium and increases the risk of hyperplasia and endometrial cancer in women with an intact uterus. Concomitant progesterone or progestin protects the endometrium. According to current menopause guidelines, women without a uterus do not require a progestogen with Estrace, while those with a uterus need either continuous or cyclic progestogen depending on the regimen.
How is Estrace vaginal cream used for urogenital atrophy? ▾
Estrace vaginal cream is applied with a calibrated applicator, typically 2–4g daily for two weeks then 1g one to three times weekly for maintenance. Local symptom relief usually occurs within 1–4 weeks. Systemic absorption at maintenance doses is low, so women using cream alone usually do not require concomitant progesterone — though the prescriber may still confirm endometrial safety in women with an intact uterus.
Is Estrace the same as generic estradiol? ▾
Yes — Estrace and authorised generic estradiol tablets contain the same active ingredient at the same strengths and have demonstrated bioequivalence. The generic is significantly cheaper and clinically equivalent in nearly all cases. The Estrace trademark survives mainly in the US for both tablets and cream, but most prescribing today is on the authorised generic.
How long can Estrace be taken? ▾
Current guidelines no longer recommend a fixed maximum duration. Treatment is continued for as long as benefits outweigh risks for the individual; many women take HRT for 5–10 years for symptom control. According to current evidence, the safety profile is most favourable for women starting under 60 or within 10 years of menopause.
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The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.