Medications for erectile dysfunction (ED), such as Viagra, Cialis, and Levitra, are prescription drugs for men who are unable to achieve or maintain an erection suitable for sex. This is the only purpose for which they have been approved.
ED drugs are not safe for all men. For example, men who take medications called nitrates for heart problems should not take ED drugs, as the interaction may cause a serious drop in blood pressure.
Men who have problems with erections should certainly talk to their doctor about ED treatment options. Those who don’t have ED, but feel they need help with performance, might also benefit from talking to their doctor, a counselor, or their partner about ways to make sex more satisfying.