Overview
It comes as pills, patches, gels, sprays, and vaginal creams, tablets, and rings.
Women with a uterus usually also need a progestin to protect the uterine lining.
What it's used for
- Hot flashes and night sweats
- Vaginal dryness and painful sex after menopause
- Preventing bone loss after menopause
- Low estrogen from other causes
How to take it
- Use it exactly as prescribed, at the lowest dose that helps.
- Change patches on schedule and rotate where you place them.
- Review with your provider every year whether you still need it.
Your dose depends on your health and other medicines. Always follow your prescription label, and ask your pharmacist if anything is unclear.
Side effects
Common side effects
- Breast tenderness
- Headache
- Nausea
- Spotting or bleeding
Warnings
- Boxed warnings: higher risk of uterine cancer (without a progestin), stroke, blood clots, breast cancer, and dementia in some studies of older women.
- Smoking raises clot risk.
- Not for people with a history of certain cancers, clots, stroke, or liver disease.
Other medicines, foods, and alcohol
- Some seizure medicines, rifampin, and St. John's wort lower its effect.
- It may change thyroid medicine needs.
Tell your provider and pharmacist about every medicine, vitamin, and supplement you take.
Pregnancy and breastfeeding
Not used during pregnancy.
Missed doses, overdose, and storage
If you miss a dose
Take it as soon as you remember, unless it's almost time for your next dose. Then skip the missed dose. Don't take two doses at once.
If someone takes too much
Call Poison Control at 1-800-222-1222 or get help online at poison.org. Call 911 if the person collapses, has a seizure, has trouble breathing, or can't be woken.
Storing it
Store at room temperature, away from heat and moisture (not in the bathroom), and out of reach of children and pets.
Conditions it's used for
Sources
- DailyMed: FDA drug label for Estradiol (U.S. National Library of Medicine)
- MedlinePlus: Drugs, herbs, and supplements
- FDA: Drugs@FDA
Last updated 2026-11-13.