Icariin Epimedium extracts powder contain an active phytochemical called icariin. (musclegelz.com)
This phytoestrogen, known as epimedium icariin is said to block the activity of a certain enzyme in the body, somewhat similar to the drugs that treat erectile dysfunction. (musclegelz.com)
In a study done by Steven Lamm, M.D, 38 men were administered 2 capsules (2 X 800 mg) of herbal complex of epimedium grandiflorum, maca pure (lepidium meyenii), mucuna pruriens, and polypodium vulgare (in short, Horny Goat Weed) for 45 days: 25 were healthy men and 13 were men already taking Vi agra. (bodybuildingforyou.com)