howtosupplement
Hormonal

Stinging Nettle Root

Herbal root extract used mainly for mild prostate-related urinary symptoms, with limited evidence beyond benign enlargement.

Stinging Nettle Root

Stinging Nettle Root

49
score
B
evidence
Caution
risk

Proven Benefits

01Improves BPH symptom scores
02Improves urinary flow modestly
03May reduce residual urine
04May lower PSA/prostate volume

Chemical Forms

Recommended
  • Standardized Urtica dioica root extract
  • Hydroethanolic root extract
  • Dried root extract capsules/tablets
Avoid
  • Leaf extract sold as root (wrong plant part for BPH evidence)
  • Unstandardized whole-root powder (variable lignan and sterol content)
Expert Note

Clinical prostate studies have mainly used standardized root extracts, often hydroalcoholic, rather than loose whole-root powder. These extracts provide more reproducible lignan and sterol levels. Root and leaf are not interchangeable, because the human evidence for BPH symptoms is tied to the root.

Protocol

Amount
300-600 mg
Frequency
Once or twice daily
When
With food to improve tolerance; consistency matters more than timing.

Condition-Based Dosing

Mild lower urinary tract symptoms attributed to BPH
300-600 mg/day of standardized root extract for 8-12 weeks

Safety & Limits

Upper Safe Limit
No official UL; up to 600 mg/day of standardized root extract has been used in human trials for several months without major safety signals.
Cycling
Safe for continuous use

Contraindications

Pregnancy or breastfeeding — insufficient safety data for routine use
Severe urinary retention, blood in urine, fever, or recurrent UTIs — may indicate obstruction, infection, or cancer and should not be self-treated
Prostate cancer or unexplained PSA elevation — use only with clinician oversight
Diabetes, blood pressure, or diuretic medications — possible additive effects; review with a clinician
Known allergy to nettle or other Urticaceae plants — may trigger allergic reactions

Synergies

Saw palmetto

Several prostate formulas pair nettle root with saw palmetto to target overlapping androgen-related and inflammatory drivers of BPH symptoms.

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