A peripheral vasodilator, blocks postsynaptic alpha1-adrenergic receptors and prevents the vasoconstrictive influence of catecholamines. It reduces pressure in the pulmonary veins and the right atrium significantly, it also reduces pulmonary vascular resistance moderately. The drug therapeutic indications include: arterial hypertension; CHF (in combination therapy), Raynaud's syndrome and disease, pheochromocytoma, peripheral vascular spasm on the background of poisoning with ergot alkaloids. Prostatic hyperplasia

Capoten suppresses activity of angiotensin-converting-enzyme therefore angiotensin-I turns into angiotensin II - substance which has strong vasoconstrictive action. Capoten reduces secretion of Aldosteronum in suprarenal cortex, at the same time the delay of sodium and water in an organism decreases. Capoten slows down process of bradykinin destruction and promotes increase of E2 prostaglandin, and also nitrogen oxide that causes vasodilating action. Thanks to these effects it is decreased the increased arterial pressure, the general peripheric resistance decreases, pressure in the right auricle, in a small circle of blood circulation decreases and cordial emission increases.