Themra Herbal Paste with Epimedium (Horny Goat Weed) Natural Aphrodisiac,Themra Epimedium Macun is natural aphrodisiac made from natural ingredients. It is also may be called Horny Goat Weed as the main ingredient is epimedium (or incariin). It stimulates the blood flow to sexual organs in that way increases the sexual drive. It is made from natural products and not chemical substances.