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Estrogel

Estradiol (17-beta estradiol) is a sex hormone. Labelled the "female" hormone but also present in males it represents the major estrogen in humans. Critical for sexual functioning, estradiol also supports bone growth. more...

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Synthesis

Estradiol, like other sex steroids, is derived from cholesterol. After side chain cleavage and either utilizing the delta-5 pathway or the delta-4 pathway androstenedione is the key intermediary. Androstendione is either converted to testosterone which in turn undergoes aromatization to estradiol, or, alternatively, androstendione is aromatized to estrone which is converted to estradiol.

Conversion of testosterone to estradiol:

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Estrogen Gel Now Available in the U.S.
From Nurse Practitioner, 11/1/04

Solvay's estradiol gel (EstroGel) is the first transdermal estrogen gel to be PDA-approved in the United States. It is now available to treat moderate-to-severe hot flashes, as well as moderate-to-severe dryness, and itching and burning in and around the vagina.

EstroGel is a clear, colorless, hydroalcoholic gel that provides continuous delivery of estradiol through the skin in a nonpatch transdermal form. It is applied once-daily on one arm from wrist to shoulder. After application, the odorless gel dries in as little as 2 to 5 minutes.

EstroGel is prescribed at a 1.25 g daily dose. It should be used in combination with a progestin in women with an intact uterus.

EstroGel is packaged in a nonaerosol, metered-dose pump that delivers one dose of gel per compression. Each pump delivers 64 doses.

Patients having unusual vaginal bleeding, or who have had certain cancers, stroke, or heart attack in the last year, should not use EstroGeI. Patients who currently have or have had liver problems, or who are or may be pregnant or breast-feeding, also should not use this product. Commonly reported side effects are the same as those typical of estrogen therapy: headache, breast pain, irregular vaginal bleeding or spotting, stomach cramps, bloating, nausea, vomiting, and hair loss.

For more prescribing information, visit http://www.estrogel.com.

Copyright Springhouse Corporation Nov 2004
Provided by ProQuest Information and Learning Company. All rights Reserved

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