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Head-to-head evidence comparison — which supplement is right for you?
Potassium wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Mostly mechanism / observational
Top outcomes
Verdict
Probably helps
10 of 15 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Boron and Potassium have evidence — compare verdict strength side-by-side.
3-10mg
With a meal
Boron citrate or boron glycinate
99-500mg daily from supplements (food provides more)
With food to reduce GI upset, Spread throughout day, During/after exercise for athletes
Potassium Citrate or Potassium Gluconate
1-4 weeks
Ongoing
2-4 weeks
1-2 weeks
Long-term
With excess or kidney issues
The Role of Mineral and Trace Element Supplementation in Exercise and Athletic Performance: A Systematic Review
Nutrients (2019) · Systematic review · n=29
Approximately 50% of athletes have reported consuming some form of micronutrient supplement; however, there is limited data confirming their efficacy for improving performance.
A Comparison of Boron Supplement and Tamsulosin as Medical Expulsive Therapy for Urinary Stones After Extracorporeal Shock Wave Lithotripsy: a Randomized Controlled Clinical Trial
Biological trace element research (2023) · Rct · n=81
No Significant side effects were reported in the two groups.
Possible therapeutic effects of boron citrate and oleoylethanolamide supplementation in patients with COVID-19: A pilot randomized, double-blind, clinical trial
Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) (2022) · Rct · n=19
Supplementation with boron citrate alone or in combination with oleoylethanolamide significantly improved O2 saturation and respiratory rate (p < 0.01).
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 · n=2500
Dose-response analysis of RCTs from 2000-2024
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=237036
Meta-analysis examining Potassium efficacy
Potassium has a higher evidence score (8.5/10 vs 5.5/10) and wins in 2 of 3 categories.
For reduce inflammation, Potassium has a higher relevance score (85 vs 65).
No known interactions between Boron and Potassium have been documented in our database. However, always consult a healthcare provider before combining supplements.