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Labetalol is an oral and parenteral medication primarily utilized for the management of hypertension. It functions as a combined selective, competitive alpha1-blocker and nonselective, competitive beta-blocker. Labetalol effectively targets beta1-receptors in the heart, beta2-receptors in bronchial and vascular smooth muscle, and alpha1-receptors in vascular smooth muscle. The drug's pharmacodynamic action is driven primarily by its beta-blocking capabilities, but the ratio of alpha- to beta-receptor activity shifts based on the route of administration: it is 1:3 when administered orally and 1:7 when administered intravenously. The ...