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Horny Goat Weed (Epimedium)

Libido · vitality

Moderate evidenceVegan4 studies on PubMedRead the research
Written to our editorial standards · reviewed against published research· Updated 30 May 2026
Last reviewed: May 30, 2026

Horny Goat Weed: Libido · vitality. An Epimedium herb traditionally used for libido and vitality, with icariin as its studied active compound. Standard dose 500-1,000 mg (icariin), taken in the morning, about $12/month. Evidence rating: moderate evidence.

Where to buy

NOW Foods Horny Goat Weed Extract
Recommended
NOW Foods, Horny Goat Weed
500-1,000 mg (icariin) · Morning · ~$12/month

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NOW Foods Horny Goat Weed ExtractBestseller
Horny Goat Weed Extract
NOW Foods
90 veg caps · $13 · ★ 4.5
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Horbaach Horny Goat WeedBest Value
Horny Goat Weed
Horbaach
200 capsules · $16 · ★ 4.5
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Nature's Way Horny Goat WeedPremium
Horny Goat Weed
Nature's Way
60 capsules · $12 · ★ 4.4
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Solaray Horny Goat WeedPremium
Horny Goat Weed
Solaray
60 veg caps · $14 · ★ 4.4
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What is Horny Goat Weed?

Horny goat weed (Epimedium) is a Chinese herbal traditionally used to support libido, energy, and, in men, erectile function. Its active compound, icariin, has mild activity on the same enzyme pathway (PDE5) targeted by some prescription options, along with effects on circulation and bone in laboratory studies. Human trials are still limited, so most of the evidence is preclinical and traditional rather than confirmed in large studies. Because of its circulatory activity, it should be used cautiously by anyone on heart, blood pressure, or blood-thinning medication, and it may influence hormone-sensitive conditions. Standardized extracts providing icariin, often 500 to 1000 mg daily, are typical.

An Epimedium herb traditionally used for libido and vitality, with icariin as its studied active compound.

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Common questions

What is Horny Goat Weed?
Horny goat weed (Epimedium) is a Chinese herbal traditionally used to support libido, energy, and, in men, erectile function. Its active compound, icariin, has mild activity on the same enzyme pathway (PDE5) targeted by some prescription options, along with effects on circulation and bone in laboratory studies. Human trials are still limited, so most of the evidence is preclinical and traditional rather than confirmed in large studies. Because of its circulatory activity, it should be used cautiously by anyone on heart, blood pressure, or blood-thinning medication, and it may influence hormone-sensitive conditions. Standardized extracts providing icariin, often 500 to 1000 mg daily, are typical.
What is Horny Goat Weed used for?
Libido · vitality. An Epimedium herb traditionally used for libido and vitality, with icariin as its studied active compound.
What is the standard dose of Horny Goat Weed?
500-1,000 mg (icariin), typically taken in the morning. Approximate cost is $12 per month.
Who should avoid Horny Goat Weed?
Use extra caution, and speak to a clinician first, if you are on blood thinners, managing a hormone-sensitive condition.
How strong is the evidence for Horny Goat Weed?
Moderate evidence for its primary uses. See the full study list on the research page.

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