Transdermal drug delivery matrix for coadministering estradiol and another steroid
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United States of America Patent
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Jul 21, 1998
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N/A
app pub date -
Jul 19, 1996
filing date -
Jul 19, 1996
priority date (Note) -
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Abstract
A matrix type transdermal patch for coadministering estradiol and another steroid wherein the matrix is composed of a N-vinyl-2-pyrrolidone-containing acrylic copolymer pressure sensitive adhesive, estradiol, the other steroid, and optionally a permeation enhancer, and the respective fluxes of estradiol and the other steroid from the matrix are independent of the respective concentrations of the other steroid and estradiol in the matrix.
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