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February 9, 2012

estrogens (conjugated) and medroxyprogesterone, Prempro, Premphase

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Medical Editor:

GENERIC NAME: conjugated equine estrogens and medroxyprogesterone acetate

BRAND NAME: Prempro, Premphase

DRUG CLASS AND MECHANISM: Prempro and Premphase are combinations of conjugated estrogens (Premarin) and medroxyprogesterone (Provera). For more information please see the conjugated estrogens and medroxyprogesterone acetate articles.

PRESCRIPTION: Yes

GENERIC AVAILABLE: No

PREPARATIONS: Prempro: tablets 0.3 mg/1.5 mg, 0.45 mg/1.5 mg, 0.625 mg/2.5 mg, 0.625 mg/5 mg (conjugated estrogen/medroxyprogesterone). Premphase: tablets, 28 day pack containing 14 tablets of 0.625 mg conjugated estrogens and 14 tablets of 0.625 mg/5 mg (conjugated estrogen/medroxyprogesterone).

STORAGE: Store at room temperature between 15-30°C (59-8677°F).

PRESCRIBED FOR: Prempro and Premphase are prescribed for women with a uterus who are experiencing hot flashes, vaginal dryness, vaginal atrophy, uterine bleeding and other symptoms associated with menopause. They also are approved for treating osteoporosis; however, other drugs usually are prescribed for this purpose.

DOSING: One tablet of Prempro should be taken daily. The lowest effective dose should be used. For either hot flashes or osteoporosis, patients are most often started at a dose of 0.3 mg/1.5 mg. For women with hot flashes, the dose is adjusted depending on the response of the hot flashes. Patients should take one tablet of Premphase daily starting with the 0.625 mg conjugated estrogen tablets for 14 days followed by one tablet daily of the 0.625/5 mg conjugated estrogen/medroxyprogesterone tablets for 14 days.

DRUG INTERACTIONS: Please see the conjugated estrogens and medroxyprogesterone acetate articles.

PREGNANCY: Prempro and Premphase should not be given to pregnant women due to the risk of harm to the fetus.

NURSING MOTHERS: Estrogens are secreted in breast milk and cause unpredictable effects in the infant. They should not be taken by women who are breast-feeding.

SIDE EFFECTS: Please see the conjugated estrogens (Premarin) and medroxyprogesterone acetate (Provera, Cycrin, Depo-Provera) articles.

Reference: FDA Prescribing Information

Previous contributing editor: Carolyn Janet Crandall, MD MS, FACP


Last Editorial Review: 10/12/2004




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Related Drugs - WebMD Health Network

estrogens (conjugated) and medroxyprogesterone, Prempro, Premphase

What causes vaginal dryness and vaginal atrophy?

Vaginal atrophy is the medical term that refers to the thinning of the wall of the vagina that occurs during menopause (the time when menstrual periods have ceased) in women. Prior to menopause, the vaginal lining appears plump, bright red, and moist. As estrogen levels decline, the lining of the vagina becomes thinner, drier, light pink to bluish in color, and less elastic. This is a normal change that is noticed by many perimenopausal and postmenopausal women.

Estrogen levels begin to fall as the menopause approaches. Estrogens are mainly produced by the ovaries. Estrogens control the development of female body characteristics such as the breasts, body shape, and body hair. Estrogens also play a significant role in the regulation of the menstrual cycle and pregnancy.

Most women reach menopause between the ages of 45 and 55, but it can occur earlier or later in life. The average age of me...

Read the Vaginal Dryness article »







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