Sodium nitroprusside belongs to what kind of antihypertensive drugs

Sodium nitroprusside is a vasodilator.

Sodium nitroprusside is a quick-acting and short-term vasodilator. Its mechanism of action is that nitric oxide is produced by vascular endothelial cells, which causes arterial and venous smooth muscle to expand directly, reducing peripheral vascular resistance and thus lowering blood pressure. Sodium nitroprusside is often used to treat hypertension and acute heart failure. Because it can reduce blood pressure in a short time, it can quickly relieve symptoms related to hypertension emergencies, such as severe headache, nausea and vomiting, visual impairment, etc.