We suggested that prazosin Co might be an effective drug of first choice for chronic hypertensive patients.

Objective To observe the antihypertensive efficacy of celiprolol in patients with essential hypertension and compare with that of atenolol.

Methods Using two kinds of hypertension models, druggery one and nerve irritation in rats, the effect of Sanwei hypotensive tablet on depressing experimental rats blood pressure is observed.