They also found that some of the supposedly "natural" products have traces of phosphodiesterase-5-inhibitors , the medication found in prescription drugs -- such as Viagra -- used to treat impotence. And there's plenty of debate on whether size matters at all.
The most sensitive nerves in the vagina are found close to the surface, Lamm notes, and the clitoris is found on the vagina's outside. So there should be plenty of ways to satisfy your partner that have nothing to do with pills, creams, surgery, or devices. For men with ED who are at risk of heart disease, prescribing Viagra or its cousins isn't enough, Boyle says.