Effect of various Membranes and their Thickness on Osmotic Tablet of Lornoxicam.

Osmotic systems use the principle of osmosis as delivery force to deliver the drug from the system, and the release rate is unaffected by the body’s pH and other physiological and gastrointestinal factors. Osmotic tablet of lornoxicam is prepared successfully to deliver drug in controlled release form for once day therapy in arthritis by overcoming all the side effect and enhancing bioavailability. The objective of the present work was to design osmotically driven oral drug delivery system containing Lornoxicam as an active ingredient and evaluate the effect of various membranes( microporous and semipermiable) on release of drug from osmotic tablet. Core tablet of lornoxicam is prepared, coated with cellulose acetate (39.8 D.S.) in which batch 6b (semipermiable) give the maximum of 91.04% release from osmotic tablet of lornoxicam in control passion as compare to other(microporous membrane coated batches.