The method used for preparing proniosome resulted in an encapsulation yield of 82.3-86.8% scanning eletron microscopy analysis showed that surface of the particles was smooth. Stability data following storage under different conditions showed that the drug content of the proniosomes varied from 99.5% under refrigerated conditions to 99.2 and 93% at room and elevated temperatures, respectively. One of the formulations (PG1) showed prolonged in vitro drug release of 61.8% over a period of 24 h.