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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
~500-1000mg pomegranate extract (standardized to ellagic acid/punicalagins) or ~250-500ml juice daily
with-meals
Standardized extract
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
4-12 weeks
4-12 weeks
Throughout use
2-4 weeks
1-2 weeks
Long-term
With excess or kidney issues
Does pomegranate consumption improve oxidative stress? A systematic review and meta-analysis of randomized controlled clinical trials.
Clinical nutrition ESPEN (2022) · Meta analysis
Improved antioxidant/oxidative-stress markers
Lipid profile changes after pomegranate consumption: A systematic review and meta-analysis of randomized controlled trials.
Phytomedicine : international journal of phytotherapy and phytopharmacology (2016) · Meta analysis
No significant effect on cholesterol/triglycerides
Effect of food sources of nitrate, polyphenols, L-arginine and L-citrulline on endurance exercise performance: a systematic review and meta-analysis of randomised controlled trials.
Journal of the International Society of Sports Nutrition (2021) · Meta analysis
Pomegranate among polyphenol sources affecting vascular function
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 5.6/10) and wins in 2 of 3 categories.
For reduce inflammation, Potassium has a higher relevance score (85 vs 55).
No known interactions between Pomegranate and Potassium have been documented in our database. However, always consult a healthcare provider before combining supplements.