Horny Goat Weed, also known as yin yang huo, is an ancient herb from the east with many potent health benefits. One of the best energy boosters for both men and women, it is now a common ingredient in many different supplements all over the world. Try our premium Horny Goat Weed complex and find out what makes it so effective! Epimedium or horny goat weed extract contains a powerful substance called "icariin", and this is responsible for most of the herb's beneficial properties. It raises stamina and gives you more lasting power for physical activies. Other benefits include better bone health, improved mental performance, and stronger immunity. In addition to Horny Goat Weed, we have included other proven ingredients, such as Maca Root and Tongkat Ali. All California Products supplements are formulated in the U.S. by GMP certified laboratories and we always put quality first.