Horny Goat Weed extract concentrates compounds from the Epimedium plant. Manufacturers typically standardize it to a set percentage of icariin, the marker they tie to the herb's traditional uses. Compared with raw herb, extracts aim for more consistent potency and, in some preparations, better absorption.
People most commonly take it for sexual health and libido support, in both men and women. Traditional practices also link it to bone density and circulation, though the science behind these uses is thinner.
Actual dosing depends on the product and its icariin strength. Many users take it alongside a meal containing fat to aid absorption. It comes as capsules, tablets, and liquid extracts.
Horny Goat Weed can interact with blood thinners like warfarin and with blood pressure medications. Pregnant or nursing women and anyone facing surgery should avoid it. It may also affect hormone-sensitive conditions.