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Types of Stinging Nettle Root: Forms & Bioavailability

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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. (). Urtica dioica for treatment of benign prostatic hyperplasia: a prospective, randomized, double-blind, placebo-controlled, crossover study. Journal of Herbal Pharmacotherapy. DOI
  2. (). 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
  3. (). Lignans from the roots of Urtica dioica and their metabolites bind to human sex hormone binding globulin (SHBG). Planta Medica. DOI