Six months ago I had triple bypass surgery,all went great no other problems or complactions.I do not take nitrates,but I am on zocor and blood pressure medication,toprol.Fifty year old with no other health issues . Maybe the blood pressure meds or something I dont know but things just dont seem to cooperate as well as they did and wondered if viagra may help.I excerise and run on treadmill no pain or discomfort when pulse rate is up.