Horny Goat Weed (Epimedium, Icariin)
Vitality & libidoFunction & benefits
A traditional Asian herb rich in icariin; laboratory and animal studies suggest icariin supports nitric oxide production and blood vessel relaxation, which may support normal blood flow and vitality, although adequate human trials are still lacking.
Dosage & how to use
| Recommended dose | 250–500 mg of standardised extract daily |
| Best time to take | An hour after a meal |
| Frequency | Once daily |
Best forms to choose
Epimedium leaf extract standardised to 10–20% icariin, in capsules.
Important warnings
May lower blood pressure and cause dizziness; avoid it with low blood pressure or heart disease
Not for use during pregnancy or breastfeeding
High doses and long-term use may cause palpitations and irritability
Drug interactions
Important warning: never combine it with heart nitrates or PDE5 inhibitors (sildenafil, tadalafil) because of the risk of a sharp drop in blood pressure; use with care alongside blood pressure drugs and blood thinners.
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Scientific references
- Dell'Agli M et al. J Nat Prod 2008 — PMID: 18778098
- Shindel AW et al. J Sex Med 2010 — PMID: 20141584
Content last updated: 17 October 2026 · Based on published sources and research (EFSA / NIH / PubMed)
⚖️ Medical disclaimer: The information and data provided here are for health education and nutritional guidance only. They are not a medical diagnosis and never replace a direct consultation with your doctor or pharmacist. Always consult your doctor before starting any supplement, especially during pregnancy or breastfeeding or when taking long-term medication.