Preparation of divalent metal salts of indomethacin

Abstract

The present invention provides a method for the treatment of inflammation and pain in a mammal requiring such treatment, comprising administering to said mammal an anti-inflammatory and analgesically effective amount of an indomethacin salt of a divalent metal capable of forming a stable complex with indomethacin, or of a pharmaceutical composition comprising said indomethacin salt together with a pharmaceutically acceptable carrier, diluent and/or excipient. The present invention also provides a process for the preparation of an indomethacin salt of a divalent metal capable of forming a stable complex with indomethacin comprising forming a solution by dissolving indomethacin and a salt of said divalent metal in a tertiary amide or cyclic tertiary amide, adding a C.sub.1-4 alkanol or C.sub.3-6 ketone to the solution to precipitate the indomethacin metal salt and separating the indomethacin metal salt precipitate from the solution. The present invention still further provides a pharmaceutical composition for alleviating inflammation and pain comprising an anti-inflammatory and analgesically effective amount of salts of indomethacin produced by the process of the invention together with a pharmaceutically acceptable carrier, diluent and/or excipient.

Dependencies are inferred from the claim text.