β1 (myocardial)- and β2 (pulmonary, vascular, and uterine)-adrenergic receptor blocker taken orally or IV for management of hypertension and Angina.
Common side effects include orthostatic hypotension, dizziness, feeling tired, and nausea. Serious side effects may include hypotension, liver problems, heart failure, and bronchospasm. Use appears safe in the latter part of pregnancy and it is not expected to cause problems during breastfeeding. It works by blocking the activation of β-receptors and α-receptors.