Pharmaceutical composition of a new system for vaginal...

A - Human Necessities – 61 – K

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A61K 47/36 (2006.01) A61K 9/20 (2006.01) A61K 31/565 (2006.01) A61K 31/57 (2006.01) A61K 47/32 (2006.01)

Patent

CA 2689987

Pharmaceutical compositions appropriate for the vaginal administration of steroids are described, to be used in a hormone replacement therapy, during menopause and to support the luteal phase of in vitro fertilization cycles. Compositions are characterized by the incorporation of polymers and disintegrators combinations, that allow an adequate mucous adherence and bio-availability of steroid hormones in the endometrium. This administration method reduces the systemic levels of steroids, allows a longer term in between doses, thus reducing side effects, and it prevents residues gathering inside the vaginal cavity.

La présente invention concerne des compositions pharmaceutiques appropriées à une administration de stéroïdes par voie vaginale. Lesdites compositions sont destinées à être utilisées dans une hormonothérapie substitutive, durant la ménopause, et à soutenir la phase lutéale des cycles de fécondation in vitro. Ces compositions se caractérisent par l'incorporation de polymères et de combinaisons de délitants, ce qui permet une adhérence adéquate aux muqueuses ainsi que la biodisponibilité des hormones stéroïdes dans l'endomètre. Ce procédé d'administration réduit les niveaux systémiques des stéroïdes, permet d'allonger la période séparant les doses - ce qui diminue les effets secondaires -, et empêche le regroupement des résidus dans la cavité vaginale.

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