Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Epimedium, also known as "Horny Goat Weed," has a long history of traditional use in Chinese medicine. It is most commonly used as an aphrodisiac and for enhancing male vitality, but it has also been traditionally employed to support general physical performance and stamina, which overlaps with the goals of athletic and exercise aids. The rationale in traditional medicine is that Epimedium can "tonify the kidney yang," believed to be associated with energy and physical strength. However, the actual evidence supporting improved athletic performance or exercise capacity is minimal. Some animal studies indicate potential effects on muscle strength and fatigue, possibly due to compounds like icariin, but robust human clinical trials are lacking. No major sports or exercise organizations recognize Epimedium as a performance-enhancing supplement. Thus, while its use for athletic and exercise support is rooted in traditional beliefs, scientific validation is limited, and the overall quality of evidence remains low.

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