While pharmacokinetics describes how the body deals with drugs, _______ describes how drug molecules interact with their targets.

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Pharmacodynamics describes how drug molecules interact with their targets, such as receptors, enzymes, and ion channels, and the resulting physiological and biochemical effects. It is different from pharmacokinetics, which refers to the movement, absorption, distribution, metabolism, and elimination of drugs in the body. Antagonist and agonist actions are specific examples of pharmacodynamic effects, where drugs either block or activate a receptor or enzyme, respectively.

While Pharmacokinetics Describes How the Body Deals with Drugs, _______