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Head-to-head evidence comparison — which supplement is right for you?
Potassium vs Stinging Nettle Root: Potassium has the stronger overall evidence (8.5 vs 5.5/10); the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Potassium wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Probably helps
2 of 3 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 Potassium and Stinging Nettle Root have evidence — compare verdict strength side-by-side.
Supplements commonly provide 99 mg per serving, and food provides more (no cited trial states the dose it used). No upper limit is established, so no maximum is stored. That is not a statement that larger amounts are safe.
With food to reduce GI upset, Spread throughout day, During/after exercise for athletes
Potassium Citrate or Potassium Gluconate
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 10 more not shown
and 1 more not shown
2-4 weeks
1-2 weeks
Long-term
With excess or kidney issues
4-8 weeks
4-8 weeks
Effect of changes in potassium intake on blood pressure: a dose–response meta-analysis of randomized clinical trials (2000–2024)
Clinical Kidney Journal (2025) · Meta analysis
Our meta-analysis included 10 RCTs, comprising 4 studies on subjects without hypertension and 6 studies on subjects with hypertension.
Magnesium and Potassium Supplementation for Systolic Blood Pressure Reduction in the General Normotensive Population: A Systematic Review and Subgroup Meta-Analysis for Optimal Dosage and Treatment Length
Nutrients (2024) · Meta analysis
Both supplements demonstrated greater reductions in SBP for the general population at lower dosages and longer treatment durations.
Sex-specific associations between sodium and potassium intake and overall and cause-specific mortality: a large prospective U.S. cohort study, systematic review, and updated meta-analysis of cohort studies
BMC medicine (2024) · Meta analysis · n=416104
Prospective analysis of 237,036 men and 179,068 women in the NIH-AARP Diet and Health Study, plus an updated meta-analysis of cohort studies.
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.
Potassium has a higher evidence score (8.5/10 vs 5.5/10) and wins in 2 of 3 categories.
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.