Controlled release compositions

Details Controlled release compositions Controlled release compositions

A - Human Necessities

61

K

A61K 9/44 (2006.01) A61J 3/08 (2006.01) A61K 9/20 (2006.01)

Patent

CA 2059855

Controlled release compositions comprising a water sweliable carrier and an active material having crenellated surface exhibit improved release properties. Suppositories and pessaries of generally cylindrical shape having four or five crenellations spaced equally around the perimeter and extending substantially along the length of the cylinder are preferred. Suppositories comprising four or five rounded crenellations which release morphine sulphate are especially useful.

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