nitroglycerin causes vasodilation--why doesn't it cause erection?
October 4, 2013 6:35 PM Subscribe
Nitroglycerin is used to treat angina by causing vasodilation of the blood vessels around the heart. Flushing is one of the side effects, indicating that vasodilation is not specific to only the heart. Do people use nitro to treat erectile dysfunction? Can erection be a side effect of nitro? Phosphodiesterase type 5 (PDE-5) inhibitors (viagra) cause vasodilation and are not supposed to be used in combination with nitroglycerin for risk of severe drops in blood pressure. This made me wonder how these drugs are specific. Why couldn't nitro be used for the penis in addition to the heart?