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Estrogen and Progestin (Hormone Replacement Therapy) (ess' troe jen) (pro jes' tin)
Other names: Activella, FemHrt, Ortho-Prefest, Premphase, Prempro
Warning Important Warning
Hormone replacement therapy may increase the risk of heart attack, stroke, breast cancer, and blood ... Full Alert
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Why is this medication prescribed?

Combinations of estrogen and progestin are used to treat certain symptoms of menopause. Estrogen and progestin are two female sex hormones. Hormone replacement therapy works by replacing estrogen hormone that is no longer being made by the body. Estrogen reduces feelings of warmth in the upper body and periods of sweating and heat (hot flashes), vaginal symptoms (itching, burning, and dryness) and difficulty with urination, but it does not relieve other symptoms of menopause such as nervousness or depression. Estrogen also prevents thinning of the bones (osteoporosis) in menopausal women. Progestin is added to estrogen in hormone replacement therapy to reduce the risk of uterine cancer in women who still have their uterus.

How should this medication be used?

Hormone replacement therapy comes as a tablet to take by mouth. It is usually taken once a day. To help you remember to take hormone replacement therapy, take it around the same time every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take this medication exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Do not stop taking this medication without talking to your doctor.

Activella, FemHrt, and Prempro come as tablets containing estrogen and progestin. Take one tablet every day.

Ortho-Prefest comes in a blister card containing 30 tablets. Take one pink tablet (containing only estrogen) once daily for 3 days, then take one white tablet (containing estrogen and progestin) once daily for 3 days. Repeat this process until you finish all the tablets on the card. Begin a new blister card the day after you finish the last one.

Premphase comes in a dispenser containing 28 tablets. Take one maroon tablet (containing only estrogen) once daily on days 1 to 14, and take one light-blue tablet (containing estrogen and progestin) once daily on days 15 to 28. Begin a new dispenser the day after you finish the last one.

Before taking hormone replacement therapy, ask your pharmacist or doctor for a copy of the manufacturer's information for the patient and read it carefully.

Are there other uses for this medicine?

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

  • Activella®
  • FemHrt®
  • Ortho-Prefest®
  • Premphase®
  • Prempro®
Last Revised January 04, 2003
American Society of Health-System Pharmacists
This information being provided is copyrighted by the American Society of Health-System Pharmacists, Inc., ASHP, Bethesda, Maryland.
©2009. All Rights Reserved.