Which of the following is a venodilator?: (A) Hydralazine, (B) Minoxidil, (C) Nitroprusside, (D) Nifedipine
Answer is C. Nifedipine is a calcium channel blocker- aeriolar dilator Minoxidil is potassium channel opener - aeriolar dilater. Hydralazine is also an aeriodilater. Nitrates are preferably venous dilators (REF.Essential of medical pharmacology KD TRIPATHI 8th Edition)