STABLE ERYTHROMYCIN SOLUTION AND PROCESS THEREFOR

摘要

A pharmaceutical formulation comprising per ml. from 1 to 100 mg. of the active ingredient erthromycin and the excipients ethanol, sufficient non-toxic acid to give a pH in the range of 8-10 after dilution with water, and propylene glycol not exceeding 0.3 ml but sufficient to bring the volume to 1 ml. The process for its preparation is described. The formulation is effective in the treatment of acne and is stable.