Controlled release hydrogel formulation
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United States of America Patent
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May 30, 1995
Grant Date -
N/A
app pub date -
Feb 14, 1994
filing date -
Feb 14, 1994
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Abstract
The invention is directed to a method for the modification of the rate of release of a drug from a hydrogel which is based on the use of an effective amount of a pharmaceutically acceptable ionizable compound that is capable of providing a substantially zero-order release rate of drug from the hydrogel.
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