This product is an alpha adrenergic receptor blocker that acts on both alpha 1 and alpha 2 receptors, dilating blood vessels and thus reducing peripheral vascular resistance. The mechanism of action of this product in treating male erectile dysfunction may be to dilate the penile artery vessels, increase the blood flow of the cavernous body, thereby improving the penile erectile function, increasing the hardness of the penis, and prolonging the duration of erection.

Sodium nitroprusside is a fast-acting and short-acting vasodilator. It has a direct dilating effect on both arterial and venous smooth muscles, but does not affect the contraction of the uterus, duodenum or myocardium. Vasodilation reduces peripheral vascular resistance, thus having a hypotensive effect. Vasodilation reduces both the preload and afterload of the heart and improves cardiac output, so it is beneficial for heart failure. Reducing afterload can reduce the impedance of the aorta and left ventricle during valvular insufficiency and reduce reflux.

Sodium nitroprusside is a fast-acting and short-acting vasodilator. It has a direct dilating effect on both arterial and venous smooth muscles, but does not affect the contraction of the uterus, duodenum or myocardium. Vasodilation reduces peripheral vascular resistance, thus having a hypotensive effect. Vasodilation reduces both the preload and afterload of the heart and improves cardiac output, so it is beneficial for heart failure. Reducing afterload can reduce the impedance of the aorta and left ventricle during valvular insufficiency and reduce reflux.

This product is a respiratory stimulant. In small doses, it reflexively excites the respiratory center through the carotid body chemoreceptors. In large doses, it directly excites the medullary respiratory center, increasing the tidal volume and increasing the respiratory rate to a limited extent. Large doses excite the spinal cord and brainstem, but seem to have no effect on the cerebral cortex. When patients with obstructive pulmonary disease have acute ventilation insufficiency, the use of this drug can improve tidal volume, blood carbon dioxide partial pressure, and oxygen saturation.

No specific pharmacological action is provided