Sustained-release preparation

Details Sustained-release preparation Sustained-release preparation

A - Human Necessities

61

K

A61K 9/14 (2006.01) A61K 9/50 (2006.01) A61K 38/02 (2006.01) A61K 38/27 (2006.01) A61K 47/34 (2006.01)

Patent

CA 2680475

Sustained release preparations, which show suppressed initial release of a physiologically active substance and can release a constant amount of the physiologically active substance over a long period of time, and dispersion vehicle thereof can be obtained by adding a cationic substance or polyols to the outside of a matrix or dispersion vehicle thereof. Thus, sustained release preparations, which show suppressed initial release of a physiologically active substance immediately after the administration and can release a constant amount of the physiologically active substance over a long period of time and dispersion vehicle thereof can be provided.

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