Pharmaceutical formulations and processes for their preparation.

摘要

Provided is a pharmaceutical composition comprising a tablet or capsule containing a pharmacologically effective amount of a pharmaceutical compound, or a pharmaceutically acceptable salt thereof, having an amidine-based group and an optional ester group, a pharmaceutically acceptable solid carrier, and a pharmaceutically acceptable acid in an amount to modify the pH of the composition to substantially that of the compound at pH of maximum stability. Such a composition is prepared by adding water during formulation manufacture and contacting the compound during formulation manufacture with a pharmaceutically acceptable acid having a pH in a saturated aqueous solution substantially that of the compound at pH of maximum stability.