Controlled release solid drug dosage forms based on mixtures of water soluble nonionic cellulose ethers and anionic surfactants
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United States of America Patent
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Jan 3, 1989
Grant Date -
N/A
app pub date -
Mar 26, 1984
filing date -
Mar 26, 1984
priority date (Note) -
Expired
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Abstract
A carrier base material combined with a therapeutically active medicament and shaped and compressed to a solid unit dosage form having a controlled and prolonged release pattern upon administration, the carrier base material being a mixture of one or more nonionic cellulose ethers and an anionic surfactant, and wherein at least one of the cellulose ethers is methyl cellulose or hydroxypropylmethylcellulose having a number average molecular weight of at least 50,000.
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