Drugs A - Z

Estradiol Oral tablet

It is mostly used as hormone replacement in menopausal women

Generic Name: estradiol  |  Brand Name: OROMONE

There is an FDA Alert for this drug. Click here to view it.

  • Estrogens increase the risk of endometrial cancer in postmenopausal women. (See Endometrial Cancer under Cautions.)
  • Do not use estrogens with or without progestins for prevention of cardiovascular disease (see Cardiovascular Risk Reduction under Uses and Cardiovascular Disorders under Cautions) or dementia (see Alzheimer's Disease under Uses).
  • The Women’s Health Initiative (WHI) study of estrogen alone reported increased risks of stroke and DVT in postmenopausal women receiving approximately 7 years of therapy with conjugated estrogens 0.625 mg daily.
  • The WHI study of estrogen plus progestin reported increased risks of MI, stroke, invasive breast cancer, pulmonary embolism, and DVT in postmenopausal women receiving >5 years of therapy with conjugated estrogens 0.625 mg in conjunction with medroxyprogesterone acetate 2.5 mg daily.
  • The WHI Memory Study (WHIMS) reported increased risk of developing probable dementia in postmenopausal women ≥65 years of age receiving long-term therapy (4–5 years) with conjugated estrogens in conjunction with medroxyprogesterone acetate or conjugated estrogen alone. Not known whether this finding also applies to younger postmenopausal women.
  • Other dosages of conjugated estrogens with medroxyprogesterone and other combinations or dosage forms of estrogens with progestin not studied in WHI trials; in absence of comparable data, assume risks are similar.
  • Prescribe estrogens (with or without progestins) at the lowest effective dose and for the shortest duration consistent with treatment goals and risks for the individual woman.

What is this medicine?

ESTRADIOL (es tra DYE ole) is an estrogen. It is mostly used as hormone replacement in menopausal women. It helps to treat hot flashes and prevent osteoporosis. It is also used to treat women with low estrogen levels or those who have had their ovaries removed.

What should I tell my health care provider before I take this medicine?

They need to know if you have or ever had any of these conditions:
  • abnormal vaginal bleeding
  • blood vessel disease or blood clots
  • breast, cervical, endometrial, ovarian, liver, or uterine cancer
  • dementia
  • diabetes
  • gallbladder disease
  • heart disease or recent heart attack
  • high blood pressure
  • high cholesterol
  • high level of calcium in the blood
  • hysterectomy
  • kidney disease
  • liver disease
  • migraine headaches
  • protein C deficiency
  • protein S deficiency
  • stroke
  • systemic lupus erythematosus (SLE)
  • tobacco smoker
  • an unusual or allergic reaction to estrogens, other hormones, medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

Take this medicine by mouth. To reduce nausea, this medicine may be taken with food. Follow the directions on the prescription label. Take this medicine at the same time each day and in the order directed on the package. Do not take your medicine more often than directed.

Contact your pediatrician regarding the use of this medicine in children. Special care may be needed.

A patient package insert for the product will be given with each prescription and refill. Read this sheet carefully each time. The sheet may change frequently.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

Do not take this medicine with any of the following medications:
  • aromatase inhibitors like aminoglutethimide, anastrozole, exemestane, letrozole, testolactone

This medicine may also interact with the following medications:

  • carbamazepine
  • certain antibiotics used to treat infections
  • certain barbiturates or benzodiazepines used for inducing sleep or treating seizures
  • grapefruit juice
  • medicines for fungus infections like itraconazole and ketoconazole
  • raloxifene or tamoxifen
  • rifabutin, rifampin, or rifapentine
  • ritonavir
  • St. John's Wort
  • warfarin

What should I watch for while using this medicine?

Visit your doctor or health care professional for regular checks on your progress. You will need a regular breast and pelvic exam and Pap smear while on this medicine. You should also discuss the need for regular mammograms with your health care professional, and follow his or her guidelines for these tests.

This medicine can make your body retain fluid, making your fingers, hands, or ankles swell. Your blood pressure can go up. Contact your doctor or health care professional if you feel you are retaining fluid.

If you have any reason to think you are pregnant, stop taking this medicine right away and contact your doctor or health care professional.

Smoking increases the risk of getting a blood clot or having a stroke while you are taking this medicine, especially if you are more than 35 years old. You are strongly advised not to smoke.

If you wear contact lenses and notice visual changes, or if the lenses begin to feel uncomfortable, consult your eye doctor or health care professional.

This medicine can increase the risk of developing a condition (endometrial hyperplasia) that may lead to cancer of the lining of the uterus. Taking progestins, another hormone drug, with this medicine lowers the risk of developing this condition. Therefore, if your uterus has not been removed (by a hysterectomy), your doctor may prescribe a progestin for you to take together with your estrogen. You should know, however, that taking estrogens with progestins may have additional health risks. You should discuss the use of estrogens and progestins with your health care professional to determine the benefits and risks for you.

If you are going to have surgery, you may need to stop taking this medicine. Consult your health care professional for advice before you schedule the surgery.


Last Updated: March 21, 2012
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