Pharmacology (from Greek φάρμακον, pharmakon, "drug"; and -λογία, -logia) is the study of drug action.[1] More specifically it is the study of the interactions that occur between a living organism and exogenous chemicals that alter normal biochemical 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.
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