<prompt> Which of the following is a venodilator?HydralazineMinoxidilNitroprussideNifedipine  <response>: 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 