Viagra should not be taken with any preexisting cardiovascular problems, in conjunction with recreational drugs or simultaneously with anabolic steroids, as these can cause heart attack or stroke. Take precautions when considering Viagra with advice from a human sexuality counselor in this free video on sexual health.
Expert: Carol L. Clark
Bio: Dr. Carol L. Clark has a Ph.D. in human sexuality, and she works with a variety of individuals, couples and groups with a wide variety of concerns.
Filmmaker: Paul Muller
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The class of drugs that Levitra, Viagra, Stendra, and Cialis belong to are called PDE5 inhibitors. They work by relaxing tight blood vessels, allowing more blood to surge into the penis and cause an erection, says Gregory Bales, M.D., an associate professor of urology at the University of Chicago.
The little pills do the trick for more than two-thirds of men with Viagra protects the heart (ED). They also work for guys who simply need them for a short time to get their “confidence back,” says Michael Eisenberg, M.D., director of male reproductive medicine and surgery at Stanford University.