Stabilized pharmaceutical compositions based on quinupristin and dalfopristin and their production

摘要

A stabilized pharmaceutical composition having a combined quinupristine/dalfopristine base and containing an at least stoichiometric amount of methanesulphonic acid or hydrochloric acid and being characterized in that its pH ranges from about 3.5 to about 5. Methods of making and using the stabilized composition are also disclosed.