It found, not only can these knock off erectile dysfunction drugs be contaminated, they may contain too much of the active ingredient or none at all.
The drugs could be especially dangerous for men with hypertension or heart disease.
Experts say stay away from non-prescription impotence drugs. They add, things you buy off the internet may appear cheaper or better, but they are usually not and they usually don't work.
In the study, 58 percent of the counterfeit drugs had too much active ingredient while 3 percent had no active ingredient at all. One-third of the pills actually differed in size, while 42 percent deferred in color. Some also contained unapproved compounds.