Labetalol

Labetalol, sold under the trade names Normodyne among others, is a mixed alpha/beta adrenergic antagonist that is used to treat high blood pressure. It can be given intravenously in severe hypertensive situations, or by mouth for long term hypertension management. Its dose and use is limited by its main side effect—postural hypotension, where there is a substantial drop in blood pressure when standing up.