BigPatents India

The present invention discloses novel multiplying porous osmotic and diffusion drug delivery system, wherein the system comprises of a) a homogenous core comprising, I) one or more water soluble medicament, ii) a binder, iii) optionally, a diluent, iv) optionally, a water soluble osmotic agent, b) a membrane coating which covers the core formulation, comprising, I) a water insoluble and semipermeable pharmaceutically acceptable polymer, ii) singe or mixture of water soluble pore forming agents which may be pH dependent or independent and soluble in gastric fluids, optionally may also act as a plasticizer, iii) a mixture of pH dependent soluble polymer soluble in intestinal pH, iv) optionally , slowly water soluble or erodible pharmaceutically acceptable polymer. Drawing Sheets: NIL Total Pages: 26. Fig. Nil