We include products we think are useful for our readers. If you buy through links on this page, we may earn a small commission Here’s our process. Viagra is a well-known treatment for erectile ...

One form of "natural viagra" is arginine, which is an amino acid that increases blood flow. Horny goat weed is a herb that inhibits the enzyme PDE5, which is also how viagra works. You can also try ...

Close up of a man's open palm as he pours out two Viagra pills from a pill bottle.

LONDON (Reuters) - A Chinese herbal remedy called horny goat weed is a promising alternative to Viagra for impotent men, Italian researchers said on Monday. The herb has long held a reputation as a ...