A method for depositing a coating comprising a polymer and pharmaceutical agenton a substrate, comprising the following steps: discharging at least one pharmaceuticalagent in a therapeutically desirable morphology in dry powder form through afirst orifice； discharging at least one polymer in dry powder form through a secondorifice； depositing the polymer and/or pharmaceutical particles onto saidsubstrate, wherein an electrical potential is maintained between the substrateand the pharmaceutical and/or polymer particles, thereby forming said coating；and sintering said coating under conditions that do not substantially modifythe morphology of said pharmaceutical agent.
