Pharmacology

n. science dealing with the uses and effects of medications

Pharmacology is the study of how drugs interact with living organisms to produce a change in function. If substances have medicinal properties, they are considered pharmaceuticals. The field encompasses drug composition and properties, interactions, toxicology, therapy, and medical applications and antipathogenic capabilities. Pharmacology is not synonymous with pharmacy, though in common usage the two are at times confused. Pharmacology deals with how drugs interact within biological systems to affect function, while pharmacy is a medical science concerned with the safe and effective use of medicines.
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Pharmacology /phar·ma·col·o·gy/ the science that deals with the origin, nature, chemistry, effects, and uses of drugs; it includes pharmacognosy, [more]Pharmacology - Community and Resources

Noun
1. the science or study of drugs: their preparation and properties and uses and effects
(synonym) pharmacological medicine, materia medica
(hypernym) medicine, medical specialty
(hyponym) pharmacokinetics
(class) adjuvant

(n.)
Knowledge of drugs or medicines; the art of preparing medicines.
  

(n.)
A treatise on the art of preparing medicines.