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Concept
Ethisterone
Résumé
Ethisterone, also known as ethinyltestosterone, pregneninolone, and anhydrohydroxyprogesterone and formerly sold under the brand names Proluton C and Pranone among others, is a progestin medication which was used in the treatment of gynecological disorders but is now no longer available. It was used alone and was not formulated in combination with an estrogen. The medication is taken by mouth.
Side effects of ethisterone include masculinization among others. Ethisterone is a progestin, or a synthetic progestogen, and hence is an agonist of the progesterone receptor, the biological target of progestogens like progesterone. It has some androgenic and anabolic activity and no other important hormonal activity.
Ethisterone was discovered in 1938 and was introduced for medical use in Germany in 1939 and in the United States in 1945. It was the second progestogen to be marketed, following injected progesterone in 1934, and was both the first orally active progestogen and the first progestin to be introduced. Ethisterone was followed by the improved and much more widely used and known progestin norethisterone in 1957.
Ethisterone was used in the treatment of gynecological disorders such as irregular menstruation, amenorrhea, and premenstrual syndrome.
Ethisterone was available in the form of 5, 10, and 25 mg oral and sublingual tablets, as well as 50 , 100 , and 250 mg oral capsules. The usual dosage was 25 mg, up to four times per day.
Progestin#Side effects and Anabolic steroid#Adverse effects
Side effects of ethisterone reportedly include symptoms of masculinization such as acne and hirsutism among others. Findings are mixed on the anabolic effects of high doses of ethisterone.
Ethisterone has weak progestogenic activity and weak androgenic activity, but does not seem to have estrogenic activity.
Ethisterone is a major active metabolite of danazol (2,3-isoxazolethisterone), and is thought to contribute importantly to its effects.
Ethisterone is a progestogen, or an agonist of the progesterone receptors.
Source officielle
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