Achyranthes Root (Niu Xi) (Achyranthes bidentata)

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Achyranthes Root (Niu Xi)

牛膝 (Niú Xī) · Achyranthes bidentata

Directs blood and herbs downward — used for knee/lower back pain, menstrual irregularity, and hypertension. Also promotes urination. Key herb for lower body complaints.

Evidence Score
3.5/10
Preliminary
Safety
Use with caution

Good For

Key Benefits

May help reduce inflammation and joint discomfort

Traditionally used to support mobility and ease pain

May support hormonal balance

Traditionally used for menstrual health and reproductive wellness

How to Take

Typical dose: Follow product label directions. Typical range: 500-1500mg daily as standardized extract
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, 牛膝 (Niú Xī) has been used for centuries. It nourishes blood and supports the liver's role in regulating menstruation according to TCM theory. TCM practitioners use it to expel wind-dampness and strengthen the sinews and bones.

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 Achyranthes bidentata

Where to Buy

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