Clonidine is a central alpha-2 adrenergic and imidazoline receptor agonist that lowers blood pressure and heart rate by decreasing sympathetic outflow, leading to vasodilation and improved myocardial perfusion. Clonidine holds Food and Drug Administration–approved indications beyond antihypertensive therapy, including treatment of attention-deficit/hyperactivity disorder in children, management of tics associated with Tourette syndrome, and adjunctive therapy for severe cancer-related pain. This activity reviews the mechanism of action, indications, adverse event profile, toxicity, dosing, drug interactions, and monitoring of clonidine, providing a comprehensive understanding of its pharmacology. Mastery of these aspects enables healthcare professionals to individualize treatment plans, optimize therapeutic outcomes, and minimize adverse events, ensuring safe and effective use of clonidine in diverse patient populations.
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