Herbs & botanicals
Epimedium
Names you may see: horny goat weed icariin
The quick take
Epimedium is a botanical genus associated with compounds such as icariin. It is often marketed under the name horny goat weed.
A closer look
What forms will I see on a label?
Different species, whole-herb extracts and standardized flavonoid preparations can have different compositions.
Why people use it
Also called horny goat weed, it appears in men's wellness blends marketed for libido and sexual vitality. Those goals are separate from demonstrated muscle-building benefits.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
A clinical trial studied a specific Epimedium-derived flavonoid preparation in postmenopausal women. Its results do not establish general sexual-performance or testosterone benefits.
What should I know before using it?
Discuss suitability with a pharmacist if you take medication. Results for a particular study preparation should not be used as dosing instructions for another extract.
Sources & further reading
Published clinical study (PubMed) ↗
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.