Patent ID: 8216606

Claim:
A method of controlling the flux of a drug from a dermal drug delivery composition, comprising: forming a dermal drug delivery composition comprising a polymer matrix and one or more drugs, wherein the polymer matrix comprises at least two polymers including: (i) a first acrylic-based adhesive polymer having substantially no functional groups and a first solubility parameter; and (ii) a second acrylic-based adhesive polymer having functional groups and a second solubility parameter different from the first solubility parameter, wherein the functional groups are selected from the group consisting of carboxyl groups, hydroxy groups, amido groups and epoxy groups; wherein at least one of the one or more drugs has a flux from the composition that is different than the flux of the drug from a corresponding composition comprising a polymer matrix that comprises one of said first or second acrylic-based adhesive polymers, but not both.