REVIEW ON NOVEL OSMOTIC DRUG DELIVERY SYSTEM
Novel drug delivery systems (NDDS) are the key area of pharmaceutical research and Development. The reason is relatively low development cost and time required for introducing a NDDS as compared to new chemical entity. Many conventional drug delivery systems have been designed to modulate the release a drug over an extended period of a time. Various designs are available to control or modulate the drug release from a dosage forms. Majority of oral CR dosage forms fall in the category of matrix, reservoir or osmotic systems. Osmotically controlled drug delivery systems (OCDDS) is one of the most promising drug delivery technology that use osmotic pressure as a driving force for controlled delivery of active agents. Drug release from OCDDS is independent of pH and hydrodynamic conditions of the body because of the semipermeable nature of the Rate controlling membrane and the design of deliver orifice used in osmotic systems, so a high degree of In vitro/In vivo correlation is achieved. Osmotic drug delivery systems release the drug with the zero order kinetics which does not depend on the initial concentration and the physiological factors of GIT. This review brings out new technologies, fabrication and recent clinical research in osmotic drug delivery.
Keywords: Osmotic, Matrix, Reservoir, Fabrication
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