While ED meds (Viagra, Levitra, and Cialis) are considered very safe on their own and there's no solid research on the effects of recreational use, doctors say mixing them with intoxicants could be unsafeespecially in large amounts.
"There could be risks associated, especially since many drugs lower blood pressure and impair judgment," says Ridwan Shabsigh, MD, director of the division of urology at Maimonides Medical Center and professor of clinical urology at Columbia University in New York City.
(What is known is that nitrates such as amyl nitrite, or "poppers," and prescription nitroglycerin should never be combined with ED drugs, as this can be deadly.)
Also: Don't buy it online
Your email inbox is likely filled with spam advertising cheap ED meds. But purchasing erectile dysfunction medications without a prescription or outside a reputable U.S. pharmacy can be dangerous, not to mention illegal.
You just don't have any guarantee about the quality and authenticity of these products; buyers often receive fake or expired medications, hazardous substitutes, or weak formulations of the pills.