Important safety information
Estrogens increase the chance of cancer of the lining of the uterus. Report any unusual vaginal bleeding to your provider right away so they can check the cause. If you have a uterus, your provider will talk with you about progesterone, which the label says should be started along with estrogen to lower that chance.
The label also carries a boxed warning on heart disease and other risks. Estrogens, with or without progestins, should not be used to prevent heart disease. In the Women's Health Initiative, women taking daily oral conjugated estrogens with medroxyprogesterone acetate had higher risks of heart attack, stroke, invasive breast cancer, blood clots in the lungs and blood clots in the legs, and women 65 and older had a higher risk of probable dementia. The label says these risks should be assumed to be similar for other estrogens and doses.
Tell your provider if you have or have had unusual vaginal bleeding, breast cancer or another estrogen-sensitive cancer, blood clots, a stroke or heart attack, liver problems, or an allergy to estradiol, and if you are or may be pregnant. Tell your provider about every medication and supplement you take, and before any surgery or bed rest.
Get medical help right away for chest pain, shortness of breath, pain in your legs, changes in vision or speech, dizziness or fainting, vomiting, or a sudden severe headache. Call your provider about a breast lump or unusual vaginal bleeding. Common side effects include headache, breast pain, irregular vaginal bleeding or spotting, stomach cramps or bloating, nausea and vomiting, and hair loss.
Based on the FDA prescribing information for estradiol tablets USP (Estrace is the original brand). Compounded estradiol tablets are not FDA approved, and the FDA does not review compounded drugs for safety, effectiveness or quality.