<prompt> The drug which releases NOHydralazineAminophyllineAmrinoneSildenaphil  <response>: Ans.isai.e.,HydralazineRef:GoodmanGilmanlTthlep863, 249, 825NO donors, which release NO are used to elicit smooth muscle relaxation.Eg: Organic nitrates nitroglycerine, Organic nitrites Isoamylnitrite, Sodium nitroprusside, Nebivolol Hydralazine 