Drug directly acting on blood vessels is:: (A) Hydralazine, (B) Verapamil, (C) Propranolol, (D) Methyaldopa
Answer is A. Ref:KDT 6/e p547 Some drugs used to treat hypeension, such as calcium channel blockers -- which prevent calcium from entering blood vesselwalls -- also dilate blood vessels. But the vasodilators that work directly on the vessel walls are hydralazine and minoxidil.