Not all progestins are the same : implications for usage

Hapgood, Janet P. ; Koubovec, Dominique ; Louw, Ann ; Africander, Donita (2004-11)

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Recent clinical evidence showing unexpected side-effects of progestins used in contraception and hormone replacement therapy has highlighted the importance of choice of synthetic progestin. The molecularmechanisms of action of the relatively nonspecific and most widely used synthetic progestins, medroxyprogesterone acetate and norethisterone, are discussed in the context of this recent clinical evidence. Future directions involving a more mechanism-based approach for improved therapeutics, with greater specificity and fewer side-effects, are discussed.

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