<prompt> Which of the following drug decreases plasma renin activity?EnalaprilNefidipineHydralazineClonidine  <response>: Ans. is d i.e., Clonidine o Drugs which increase plasma renin activity Diuretics, vasodilators, CCBs, ACE inhibitors may be combined with drugs which lower plasma renin activity sympatholytic drugs - b-blockers, clonidine, methyl dopa. 