Horny Goat Weed

Icariin hits PDE5, the enzyme sildenafil hits, at a small fraction of the strength.

Also called Epimedium, Yin Yang Huo, Icariin, Herba Epimedii, Yinyanghuo, Barrenwort

The item

Three squares: proven in human trials. Two: a strong signal. One: early human data. Striped: the trials disagree.

Emergency: call 911.

I am not a doctor. This is not medical advice. This is self-education. Talk to a physician who has your history before you change anything.