Crystalline tranilast salts and their pharmaceutical use

The invention relates to crystalline tranilast salts. The crystalline tranilast salts, their preparation and their characterization are described and shown in the figures. The invention relates to pharmaceutical compositions containing a crystalline tranilast salt of the invention and a pharmaceutically acceptable carrier. The invention also relates to methods of treatment and the use of a therapeutically effective amount of a crystalline tranilast salt of the invention for treatment. The invention also relates to a method of preparing a liquid pharmaceutical composition comprising the step of dissolving a crystalline tranilast salt of the invention in a pharmaceutically acceptable solvent and to liquid pharmaceutical compositions prepared according to that method.