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Types of Stinging Nettle Root: Forms & Bioavailability

Evidence:Moderate
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Forms Comparison

FormBioavailabilityBest For
Standardized Root Extract (1-2% plant sterols)Moderate-HighBPH and prostate health — matches the form used in European clinical trials and approved phytotherapies
Root Extract with Saw Palmetto (combination)Moderate-HighSynergistic prostate support — the PRO 160/120 combination has been studied in multiple RCTs
Dried Root PowderModerateTraditional preparation — less concentrated than standardized extracts

Standardized Root Extract (1-2% plant sterols)

Bioavailability: Moderate-High. Best for: BPH and prostate health — matches the form used in European clinical trials and approved phytotherapies.

Root Extract with Saw Palmetto (combination)

Bioavailability: Moderate-High. Best for: Synergistic prostate support — the PRO 160/120 combination has been studied in multiple RCTs.

Dried Root Powder

Bioavailability: Moderate. Best for: Traditional preparation — less concentrated than standardized extracts.

Full Stinging Nettle Root Guide

References

  1. RCTSafarinejad MR (2005). Urtica dioica for treatment of benign prostatic hyperplasia: a prospective, randomized, double-blind, placebo-controlled, crossover study. Journal of Herbal Pharmacotherapy. DOI PubMed
  2. RCTLopatkin N, Sivkov A, Walther C, et al. (2005). Long-term efficacy and safety of a combination of sabal and urtica extract for lower urinary tract symptoms — a placebo-controlled, double-blind, multicenter trial. World Journal of Urology. DOI PubMed
  3. In-vitroSchottner M, Gansser D, Spiteller G (1997). Lignans from the roots of Urtica dioica and their metabolites bind to human sex hormone binding globulin (SHBG). Planta Medica. DOI PubMed