This article throws light upon the three main types of incompatibility of drugs in prescription. The types are: 1. Therapeutic (Pharmacological) Incompatibility 2. Chemical Incompatibility 3. Physical Incompatibility. Type # 1. Therapeutic (Pharmacological) Incompatibility: It occurs as a result of antagonistic (opposite) pharmacological effects in the patients or interfere with drug absorption following administration e.g., […]