The present invention relates to a delivery system for pharmaceuticalcompositions relying in part on an ionic interaction to control and facilitaterelease of the treating agent. More specifically, the invention relates to anextended controlled-release system having an ionic treating agent and an ionicpolymer, wherein the polymer is sufficiently ionized to release the treatingagent in a controlled manner over an extended period of time and thecomposition does not require an emulsion system for administering the treatingagent.
