Horny goat weed seems to date all the way back to 400 AD in China. It is highly valued in China and gets its name from a farmer who noticed an increase in his livestocks' sexual activity. After ingesting the herb himself, he realized its affects and it has since been used as a sexual stimulant. It is often used to organiclly treat erectile disfunction and to increase libido in men and women alike. It was always used to alleviate fatigue in its users. Horny goat weed enjoys similar usage today and is a stable in Chinese herbalism