A self-supporting polymeric diffusion matrix provides for the sustained release of propranolol in order to deliver said propranolol to a patient. The matrix comprises from about 1 to about 60% by weight of a polar plasticizer, from about 5 to about 20% by weight polyvinylalcohol having a molecular weight from about 50,000 to about 150,000, from about 10 to about 25% by weight polyvinylalcohol having a molecular weight from about 4,000 to about 15,000, from about 2 to about 30% by weight polyvinylpyrrolidone, and a pharmaceutically effective amount of the propanolol to provide a sustained release of said propranolol over a prolonged period.

专利号	专利名称	专利权人	优先权号
WO8300092A1	POLYMERIC DIFFUSION MATRIX CONTAINING PROPRANOLOL	KEY PHARMA [US];	US19810281322 US19820337386 US19820338256
EP0082880A1	POLYMERIC DIFFUSION MATRIX CONTAINING PROPRANOLOL.	KEY PHARMA [US];	US19810281322 US19820337386 US19820338256

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