+**Drug Action** describes the specific molecular events and interactions through which a [Drug](/wiki/drug) elicits a physiological or biochemical change within a living system. It often involves binding to particular [Receptors](/wiki/receptor) or enzymes, initiating a cascade of cellular processes that lead to its observed effects, whether therapeutic or adverse.
+## See also
+- [Pharmacology](/wiki/pharmacology)
+- [Toxicology](/wiki/toxicology)
+- [Therapeutics](/wiki/therapeutics)
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