Can everyone use sildenafil?
No. You shouldn’t use this medicine if you take nitroglycerin or any other nitrates for chest pain. If you have heart problems, tell your doctor before taking sildenafil. This medicine can have serious side effects in people who have heart problems. If you use sildenafil and get chest pains, be sure to tell the paramedics, nurses or doctors at the hospital that you use it and when you used it last. You also shouldn’t take sildenafil if you are taking other medicines for erectile dysfunction.