Tag: drug antagonism

Pharmacodynamic Drug Interactions: What Happens When Drugs Combine

By Joe Barnett    On 17 Feb, 2026    Comments (1)

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Pharmacodynamic drug interactions occur when drugs alter each other’s effects at the receptor or physiological level - not by changing concentrations, but by clashing or cooperating at the site of action. These interactions can be deadly or therapeutic, depending on the combo.

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