Horny goat weed, known as Epimedium in China, was discovered around 200 BC. Domestic ?Undersun Biomedtech Corp supplies epimedium extract all year round. The plant has been used for a long time as a natural plant aphrodisiac. Many ancient books describe epimedium to maintain sexual desire, erectile function and help alleviate menopausal discomfort. As its function was revealed more and more, Epimedium was extensively studied in the West in the second half of the 20th century and was warmly welcomed.