Spherical crystallization of glipizide for improvement of micrometric properties

Abstract

Glipizide is an anti diabetic drug with water insolubility and poor compressibility. Glipizide pure drug was converted into spherical crystal agglomerates via the spherical crystallization technique using dichloromethane-water-chloroform solvent system. The various parameters optimized were type, amount and mode of addition of bridging liquid, temperature and agitation speed to get maximum amount of spherical crystals. These were characterized for micromeritic properties (particle size and shape, flow ability), pack ability (bulk density), wet ability (contact angle) and compressibility. It was revealed from the study that spherical agglomerates exhibited improved flow ability, wet ability and compaction behavior.