Sustained release polymer blend for pharmaceutical applications
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United States of America Patent
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-
Apr 3, 2001
Grant Date -
N/A
app pub date -
Apr 28, 1997
filing date -
Apr 28, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pharmaceutical composition has a blend of at least first and second components and a medicament in a sufficient amount to be therapeutic where the first component is selected from hydroxypropylcellulose (HPC), ethylcellulose (EC), or derivatives of HPC, EC, and hydroxyethylcellulose (HEC) and the second component is at least one other polymer. When HPC is the first component, hydroxypropylmethylcellulose (HPMC), HEC, or carboxymethylcellulose will not be the second component and when EC is the first component, HPMC will not be the second component. The medicament can be a variety of drugs or nutritional supplements. The pharmaceutical composition releases the medicament for a prolonged or sustained period of time and can be formulated into many dosage forms.
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