主权项 |
1. A transdermal drug delivery system for the transdermal delivery of levonorgestrel and ethinyl estradiol in the form of a flexible finite system for topical application, comprising a polymer matrix comprising levonorgestrel, ethinyl estradiol, an acrylic polymer that comprises a hydroxy functional acrylic polymer, a humectant, a first enhancer selected from the group consisting of glyceryl monooleate, dipropylene glycol, and methyl laurate, a second enhancer different from the first enhancer and selected from the group consisting of glyceryl monooleate, dipropylene glycol, methyl laurate, diethylene glycol monoethyl ether, and dimethyl isosorbide, and, optionally, and a third enhancer different from the first and second enhancers and selected from the group consisting of glyceryl monooleate, dipropylene glycol, methyl laurate, diethylene glycol monoethyl ether, and dimethyl isosorbide. |