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Stinging Nettle Root Side Effects & Safety

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Safety Profile

Overall safety rating: Generally Safe

Potential Side Effects

  • Mild GI discomfort (upset stomach, diarrhea) — uncommon at standard doses
  • Sweating (occasionally reported)
  • Allergic skin reaction in individuals sensitive to nettle (rare with root extract)
  • Well-tolerated in clinical trials — side effect incidence comparable to placebo

Drug & Supplement Interactions

  • Blood pressure medications — nettle may have mild diuretic and hypotensive effects; monitor blood pressure
  • Diabetes medications — may have mild hypoglycemic effects; monitor blood sugar
  • Blood thinners (warfarin) — nettle leaf (not root) contains vitamin K; root extract is less concerning but inform physician
  • Finasteride/dutasteride — potential additive 5-alpha-reductase inhibition; may be beneficial but discuss with urologist

Maximum Dose

Do not exceed: 1200mg daily has been used in studies; standard therapeutic dose is 600mg

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