I have Prinzmetal Angina quite badly (diagnosed Mrch 2012). I am on Diltiazim, Nicorandil, Nitro patches and spray as well as a host of herbal medicines such as L'Arginine andL'Carnitine. I have been taking a lot of nitrolingual spray recently due to it being cold and my chest pain being a lot worse. I don't know what else to do as I am on almost the maximim dose of all my tablets and fall back on the nitro spray many times a day to help me sleep...and just generally survive the day. My pharmacist just commented about how concerned he is at the amount of nitrates I am taking and explained the problems with 24/7 useage. I am seeing my cardiologist next week so know what I have to ask him but feel he is not very proactive. I think I need a second opinion Cardiologist wise anyway. I am just REALLY SCARED at what to do now. I don't know what else I could take that I am not already taking and it is still not working. What would happen if i became resistant to nitrates too???? That scares me so much. Does anyone have any suggestions??