Drug, Food, Chemical or Biomedical Material Pharmacologic Substance Pharmacologic Substance DRUG Drug Substance Pharmaceuticals Pharmacologic Agent Drug therapeutic agents Agent drug Pharmaceutical Agent Any natural, endogenously-derived, synthetic or semi-synthetic compound with pharmacologic activity. A pharmacologic substance has one or more specific mechanism of action(s) through which it exerts one or more effect(s) on the human or animal body. They can be used to potentially prevent, diagnose, treat or relieve symptoms of a disease. Formulation specific agents and some combination agents are also classified as pharmacologic substances. therapeutic_agents Therapeutic Agent Pharmacological Substance