Horny goat weed has been a staple of eastern medicine for thousands of years where it is used as a natural libido enhancer, said to increase blood flow and improve sexual function for both men and women.* Its original name “yin yang huo” is even a reference to its believed usefulness for both women (yin) and men (yang). Nutricost Horny Goat Weed 600 mg (180 Capsules) is a dietary supplement featuring Epimedium extract standardized to 10% flavones/icariins. Each bottle provides 180 single-capsule servings intended to support energy, stamina, and sexual vitality for men and women.