Stinging Nettle Root
Herb ·Exploratory record · not publication-reviewed ·Updated July 13, 2026
Stinging nettle root is used for lower urinary tract symptoms associated with benign prostatic hyperplasia. Randomized trials and reviews suggest possible improvements in symptom scores and urinary flow, but study quality is mixed and it should not delay evaluation for prostate cancer, urinary retention, infection, or kidney problems. Root products are distinct from nettle leaf diuretics and allergy products.
Exploratory record, not a reviewed medical publication.
See the editorial and medical-review policies for the publication gate.
This generated database record has not completed a claim-level review by a qualified human medical reviewer. Bibliography links and evidence labels are not approval. The page remains available for reference and is excluded from search indexing.
What the research says.
A quick, data-only summary. The full evidence, dosing, and sources are below.
Stinging Nettle Root is a herb most often used for may improve international prostate symptom score, may improve urinary flow in some men with bph, may reduce postvoid residual volume. NutriStack rates the overall evidence as moderate. A typical adult dose is 300-600 mg/day root extract, or 450 mg/day used in some trials; product standardization varies, commonly taken as standardized urtica dioica root extract, not leaf-only nettle products. This profile indexes 3 sources.
- Mild stomach upset
- Sweating
- Rash or allergy
- Suspected prostate cancer, hematuria, fever, urinary retention, recurrent urinary tract infection, or kidney impairment without medical evaluation
- Pregnancy and breastfeeding
The bottom line
Evidence rating moderate. Most-documented uses: may improve international prostate symptom score, may improve urinary flow in some men with bph, may reduce postvoid residual volume. 3 sources indexed (2005–2020), with 0 interaction records on file.
How it works, mechanistically.
Core mechanism
Nettle root contains lignans, sterols, lectins, and polysaccharides that may influence inflammatory signaling, sex hormone binding globulin interactions, aromatase-related pathways, and prostate stromal growth signaling. Clinical effects appear focused on urinary symptom burden rather than reliably shrinking the prostate or lowering PSA. Mechanistic claims about testosterone or estrogen modulation remain less certain than the LUTS trial data.3,2
Dosing & protocol.
Take with meals if stomach upset occurs. Confirm the product uses root, because leaf preparations have different traditional uses.
What it actually costs.
Real-world pricing across three quality tiers. Assumes Standardized nettle root extract capsule.
Root-only products are preferred for BPH; blends can cost more and add interaction complexity. Updated 2026-06-04.
Full safety detail.
Side effects
- Mild stomach upset
- Sweating
- Rash or allergy
- Fluid or urination changes
- Dizziness in susceptible users
Contraindications
- Suspected prostate cancer, hematuria, fever, urinary retention, recurrent urinary tract infection, or kidney impairment without medical evaluation
- Pregnancy and breastfeeding
- Use with diuretics, anticoagulants, diabetes drugs, or blood pressure drugs without clinician guidance
- Known allergy to Urtica species1,2
Sources, by evidence tier.
Numbered references. Citations throughout the page link here.
Meta-analyses & systematic reviews
1- 1The efficacy and safety of Urtica dioica in treating benign prostatic hyperplasia: a systematic review and meta-analysisMen C et al. · African Journal of Traditional, Complementary and Alternative Medicines · 2016
Pooled randomized trials favored Urtica dioica for symptom score and urinary flow outcomes.
Randomized controlled trials
2- 2Urtica Dioica Root Extract on Clinical and Biochemical Parameters in Patients with Benign Prostatic Hyperplasia, Randomized Controlled TrialKarami AA et al. · Pakistan Journal of Biological Sciences · 2020
Twelve weeks of root extract was evaluated for IPSS and biochemical markers in men with BPH.
- 3Urtica dioica for treatment of benign prostatic hyperplasia: a prospective, randomized, double-blind, placebo-controlled, crossover studySafarinejad MR · Journal of Herbal Pharmacotherapy · 2005
Nettle root improved LUTS, IPSS, Qmax, and postvoid residual compared with placebo in men with BPH.
Common questions.
Quick answers about Stinging Nettle Root, drawn from the data on this page.
What is Stinging Nettle Root?
Stinging nettle root is used for lower urinary tract symptoms associated with benign prostatic hyperplasia. Randomized trials and reviews suggest possible improvements in symptom scores and urinary flow, but study quality is mixed and it should not delay evaluation for prostate cancer, urinary retention, infection, or kidney problems. Root products are distinct from nettle leaf diuretics and allergy products.
What is Stinging Nettle Root used for?
Commonly cited benefits of Stinging Nettle Root include: May improve International Prostate Symptom Score; May improve urinary flow in some men with BPH; May reduce postvoid residual volume; Often paired with saw palmetto in prostate formulas. NutriStack rates the overall evidence as moderate.
What is a typical dose of Stinging Nettle Root?
A typical adult dose of Stinging Nettle Root is 300-600 mg/day root extract, or 450 mg/day used in some trials; product standardization varies. The commonly recommended form is Standardized Urtica dioica root extract, not leaf-only nettle products. These are general ranges, not personalized advice; confirm the right dose with a clinician.
What are the side effects of Stinging Nettle Root?
Reported side effects include mild stomach upset, sweating, rash or allergy, fluid or urination changes, dizziness in susceptible users. This is educational information; check with a healthcare professional before use.
How strong is the evidence for Stinging Nettle Root?
NutriStack rates this as Moderate, meaning several aligned RCTs or one large RCT plus supporting reviews. Full tier criteria are at https://nutristackapp.com/methodology/evidence-tiers.
Use this with your stack
Stinging Nettle Root in NutriStack.
Add it to your stack, see how it interacts with everything else you take, and get a Stack Score that updates the moment it does.