I'm a medical school student and I hadn't really thought about the correlation, but nitroglycerin is often used as a vasodilator. We're always supposed to handle it with gloves for a very good reason. Sometimes applied through IV, I've seen someone use it without gloves and almost instantly pass out due to the intense vasodilatation from a few drops. Obviously this depends on concentration. But my thoughts were...
During full erection, application of a transdermal patch could possibly increase blood flow inside the penis by dilation. To what extent, I'm not sure. Anyways, you get the idea.
During full erection, application of a transdermal patch could possibly increase blood flow inside the penis by dilation. To what extent, I'm not sure. Anyways, you get the idea.