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Head-to-head evidence comparison — which supplement is right for you?
Saw Palmetto vs Stinging Nettle Root: they're closely matched on evidence (4 vs 5.5/10); they're alternatives for prostate health — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Saw Palmetto and Stinging Nettle Root are closely matched across evidence, studies, and safety.
Verdict
Too few graded studies
1 of 2 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
3 of 3 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Saw Palmetto and Stinging Nettle Root have evidence — compare verdict strength side-by-side.
320mg standardized extract (85-95% fatty acids) (no cited trial states the dose it used)
With meals
Liposterolic extract (standardized to 85-95% fatty acids)
300-450 mg root extract a day (the cited trials used 450 mg of nettle root extract a day for 12 weeks, and 459 mg of dry root extract a day for 1 year). Label products go up to 600 mg, above the highest dose in the cited trials.
With meals, Split into 2-3 doses
Standardized root extract
and 1 more not shown
4-12 weeks
4-12 weeks
4-8 weeks
4-8 weeks
Clinical Efficacy of Serenoa repens Versus Placebo Versus Alpha-blockers for the Treatment of Lower Urinary Tract Symptoms/Benign Prostatic Enlargement: A Systematic Review and Network Meta-analysis of Randomized Placebo-controlled Clinical Trials
European urology focus (2021) · Meta analysis · n=8564
In this network meta-analysis, we demonstrated that SeR did not show clinically meaningful improvement in LUTS and PF.
Efficacy and safety of a hexanic extract of Serenoa repens (Permixon) for the treatment of lower urinary tract symptoms associated with benign prostatic hyperplasia (LUTS/BPH): systematic review and meta-analysis of randomised controlled trials and observational studies
BJU International (2018) · Meta analysis · n=5800
Data from 27 studies (15 RCTs and 12 observational studies) were included for meta-analysis. Articles studying S. repens extracts other than Permixon were excluded.
Serenoa repens for the treatment of lower urinary tract symptoms due to benign prostatic enlargement.
The Cochrane database of systematic reviews (2023) · Systematic review · n=4656
We included 27 studies (of which 9 were new) involving a total of 4656 participants, 19 studies comparing Serenoa repens with placebo, and 8 studies comparing Serenoa repens in combination with other phytotherapeutic agents versus placebo.
The effect of nettle (Urtica dioica) supplementation on the glycemic control of patients with type 2 diabetes mellitus: A systematic review and meta-analysis
Phytotherapy research : PTR (2020) · Meta analysis · n=401
Not the root indication. The evidence base for stinging nettle root (Urtica dioica) is BPH and lower urinary tract symptoms, and this study is about glycemic control in type 2 diabetes. The abstract does not state which part of the plant was used. Read it as species-level context, not as root evidence.
Dietary Plants for the Prevention and Management of Kidney Stones: Preclinical and Clinical Evidence and Molecular Mechanisms
International journal of molecular sciences (2018) · Review
Not the root indication. The evidence base for stinging nettle root (Urtica dioica) is BPH and lower urinary tract symptoms, and this study is about kidney-stone prevention. The paper describes a leaf/aerial preparation. Read it as species-level context, not as root evidence.
Plant food supplements with anti-inflammatory properties: a systematic review (II)
Critical reviews in food science and nutrition (2013) · Systematic review
Not the root indication. The evidence base for stinging nettle root (Urtica dioica) is BPH and lower urinary tract symptoms, and this study is about anti-inflammatory effects. The abstract does not state which part of the plant was used. Read it as species-level context, not as root evidence.
All points come from the CAMUS trial in 369 men with urinary symptoms from an enlarged prostate, which raised an ethanolic extract from 320 to 640 to 960 mg a day over 72 weeks (PMID 21954478). At no dose was saw palmetto better than placebo for the symptom score or any secondary outcome, peak urinary flow included, so every point is plotted as no effect. The same trial found no toxicity and no dose-related adverse effects up to 960 mg a day over 18 months (PMID 23063633). A meta-analysis limited to the hexanic extract Permixon reported a higher peak flow than placebo (PMID 29694707), a different extract from the one CAMUS tested.
AI-estimated from published studies. Interpret as directional guidance.
Both Saw Palmetto and Stinging Nettle Root are closely matched — the best choice depends on your specific health goals.
For prostate health, Stinging Nettle Root has a higher relevance score (80 vs 32).
No documented interaction was found in the data searched. This does not establish that this exact combination is safe.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.