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Head-to-head evidence comparison — which supplement is right for you?
Pea Protein vs Potassium: Potassium has the stronger overall evidence (8.5 vs 5.5/10); they're alternatives for build strength & muscle — 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
Mostly mechanism / observational
Top outcomes
Verdict
Probably helps
7 of 12 studies with measurable effects showed benefit.
Top outcomes
20-40g per serving (aim for ~2-3g leucine; ~0.7-1g protein/lb bodyweight total daily)
any
Pea protein isolate (often blended with rice protein)
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
Acute-days
Acute
2-4 weeks
1-2 weeks
Long-term
With excess or kidney issues
Effects of Whey and Pea Protein Supplementation on Post-Eccentric Exercise Muscle Damage: A Randomized Trial.
Nutrients (2020) · Rct · n=92
No significant pea-vs-whey difference in recovery outcomes
Resistance training increases myofibrillar protein synthesis in middle-to-older aged adults consuming a typical diet with no influence of protein source: a randomized controlled trial.
The American journal of clinical nutrition (2025) · Rct · n=27
Increased muscle protein synthesis with training + pea protein
Real ileal amino acid digestibility of pea protein compared to casein in healthy humans: a randomized trial.
The American journal of clinical nutrition (2022) · Rct · n=15
Pea protein is well digested, though slightly below casein
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 build strength & muscle, Pea Protein has a higher relevance score (58 vs 55).
No known interactions between Pea Protein and Potassium have been documented in our database. However, always consult a healthcare provider before combining supplements.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.