Horny Goat Weed

淫羊藿 (Yín Yáng Huò) · Epimedium brevicornu

A TCM yang tonic used for fatigue, low libido, and bone health. Contains icariin, which inhibits PDE5 similarly to sildenafil. Popular men's health supplement.

Evidence Score
3/10
Preliminary
Safety
Use with caution

Good For

energy

Key Benefits

May help combat fatigue and increase stamina

Traditionally used to support physical endurance

How to Take

Typical dose: Follow product label. Typically 500-1500mg extract daily, taken in the morning
Forms: capsule, powder, tea/decoction
Timing: Take with food unless otherwise directed. Allow 2-4 weeks for full effects with tonic herbs
Start with lower doses and increase gradually. Quality and standardization vary between brands.

Safety & Interactions

Possible Side Effects

  • Digestive discomfort at higher doses
  • May cause drowsiness or stimulation depending on the herb
  • Allergic reactions possible in sensitive individuals

Do Not Use If

  • Pregnancy and breastfeeding (insufficient safety data)
  • Children under 12 without professional guidance
  • Scheduled surgery (stop 2 weeks before)

Drug Interactions

  • May interact with prescription medications
  • May affect blood sugar or blood pressure medications
  • Consult pharmacist before combining with other supplements

Traditional Use

In Traditional Chinese Medicine, 淫羊藿 (Yín Yáng Huò) has been used for centuries. It is traditionally classified as a qi-tonifying herb that strengthens vitality.

Modern Research

Very limited modern research exists for this herb. Evidence is primarily based on traditional use documentation and basic laboratory studies. Clinical trials are lacking. Use is based mainly on centuries of empirical traditional practice rather than modern scientific validation.

View all studies on PubMed for Epimedium brevicornu →

Where to Buy

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