Pharmaceutical Drug is another word for Medication/Medicine or organic small molecule impact either physically /or psychologically, intended to Treat, cure, Diagnose, Prevent, Diagnose a Diseases. So gives therapeutic value to patient. Drugs may be curative (e.g. alcohol, caffeine and tobacco) or addict (e.g. cannabis, ecstasy, cocaine and heroin).
Medicine = Cure = Long Life = Drug ≠ Addict ≠ Short Life.