Matrix-type transdermal patch for steroid hormones
AssigneeRottapharm S.p.A.
InventorsAntonino Santoro, Lucio C. Rovati
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Abstract
The present invention refers to a transdermal patch for the release of Estradiol and at least one progestogen agent through the skin, comprising or consisting of an outer backing foil, a matrix and a protective liner wherein a) the Estradiol and the progestogen agent(s) are present in the matrix in an oversaturated solution, b) the matrix contains 1 to 5 wt% activated SiO2, and c) the matrix has a moisture content of less than 0.7 wt.-%. The patch can be used for hormonal replacement therapy.
Claims29
A transdermal patch for the release of estradiol and at least one progestogen agent through the skin, comprising an outer backing foil, a matrix and a protective liner wherein:
- (a) the estradiol and the progestogen agents (s) are present in the matrix in an supersaturated solution,
- (b) the matrix contains 1 to 4 wt % activated SiO2, and
- (c) the matrix has a moisture content of less than 0.7% wt.-%.
Dependencies are inferred from the claim text.