Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 15, 2009
Patent Application Number
10864470
Date Filed
June 10, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
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.
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