Mechanism of action

In pharmacology, the term mechanism of action refers to the specific biochemical interaction through which a drug substance produces its pharmacological effect. A mechanism of action usually includes mention of the specific molecular targets to which the drug binds, such as an enzyme or receptor.

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For example, the mechanism of action of aspirin involved irreversible inhibition of the enzyme cyclooxygenase, which suppresses the production of prostaglandins and thromboxanes thereby reducing pain and inflammation.