TWINLAB Horny Goat Weed has created a reputation in the medical world. Legend says the name of the plant originated when a shepherd became aware of the improved libido level of his goats after they had grazed in a pasture full of this weed. Years later, in-depth studies confirmed the shepherd's observations. Ingestion of the weed creates nitric oxide in the body, and this improves the flow of the blood as well as promoting muscle relaxation. It is safe for both men and women. Apart from having aphrodisiac effects, this impressive formula is also useful in solving erectile and menopause problems.