Sustained-release preparation

Details Sustained-release preparation Sustained-release preparation

A - Human Necessities

61

K

A61K 31/501 (2006.01) A61K 9/22 (2006.01) A61K 47/04 (2006.01) A61K 47/12 (2006.01) A61K 47/26 (2006.01) A61K 47/32 (2006.01) A61K 47/36 (2006.01) A61K 47/38 (2006.01) A61P 7/02 (2006.01)

Patent

CA 2620259

It is intended to provide a sustained-release pharmaceutical preparation with a pH-independent absorbability. The sustained-release preparation is characterized by containing 4-bromo-6-[3-(4-chlorophenyl)propoxy]-5-(3- pyridylmethylamino)-3(2H)-pyridazinone or a salt thereof as an pharmaceutically active ingredient and containing a hydrogel base and an organic acid.

La présente invention concerne une préparation pharmaceutique à libération retardée qui présente une absorbabilité indépendante du pH. Cette préparation pharmaceutique à libération retardée se caractérise en ce qu'elle renferme du 4-bromo-6-[3-(4-chlorophényl)propoxyl]-5-(3-pyridylméthylamino)-3(2H)-pyridazinone ou un sel de ce dernier en tant qu'ingrédient pharmaceutiquement actif ainsi qu'une base hydrogel et un acide organique.

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