Horny Goat Weed, also known as Epimedium is an herb which is well known for having libido promoting properties and is believed to help support optimal testosterone levels as well. The active ingredient in Horny Goat Weed believed to be responsible for most of its benefits is the flavonoid icariin. Our Horny Goat Weed supplement is a high potency extract designed to maximize icariin content and is standardized to 20% icariins. This means each 1000 mg serving contains 200 mg of icariins, making this one of the most potent Horny Goat Weed products on the market.