PROCESS FOR THE MANUFACTURE OF STABLE SHAPED PARTICLES CONSISTING OF ESTRADIOL AND CHOLESTEROL

The present invention provides slow release estradiol-progesterone formulations that can be used in either contraception or hormone replacement therapies. The formulations comprise shaped particles of estradiol that is in a hemicrystalline form that exhibits especially low dissolution rates. The sha...

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Bibliographische Detailangaben
Hauptverfasser: ANGELES URIBE, JUAN, SAVOIR, JOHN CLAUDE
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:The present invention provides slow release estradiol-progesterone formulations that can be used in either contraception or hormone replacement therapies. The formulations comprise shaped particles of estradiol that is in a hemicrystalline form that exhibits especially low dissolution rates. The shaped particles comprise estradiol compounded in a 1:1 molar ratio with cholesterol, and are administered in combination with progesterone. The slow release formulations of the present invention afford the dual advantages of a low dose estradiol formulation with a low frequency administration regimen. The formulations can be parenterally administered once a month or less often.