Self-respecting herbal sex enhancer wouldn't contain Epimedium Grandiflorum Extract, more famously known as "Horny Goat Weed"? This herb has occupied a central position in traditional Chinese medicine for over 2,000 years, and continues to grow in popularity. According to legend, a goat herder noticed an increase in the sexual activity of his flock after they ate the weed. Hence the name.