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.
100-200mg daily
With meals, Pre-workout or morning
Pure (-)-Epicatechin 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
4-8 weeks
2-4 weeks
4-8 weeks
N/A
2-4 weeks
1-2 weeks
Long-term
With excess or kidney issues
Dietary flavonoid for preventing colorectal neoplasms
The Cochrane database of systematic reviews (2012) · Meta analysis · n=390769
A statistically significant reduced risk of CRC was found with high intake of epicatechin.
Effects of chocolate, cocoa, and flavan-3-ols on cardiovascular health: a systematic review and meta-analysis of randomized trials
The American journal of clinical nutrition (2012) · Meta analysis · n=1297
Insulin resistance (HOMA-IR: -0.67; 95% CI: -0.98, -0.36) was improved by chocolate or cocoa due to significant reductions in serum insulin.
Impact of flavan-3-ols on blood pressure and endothelial function in diverse populations: a systematic review and meta-analysis of randomized controlled trials
European journal of preventive cardiology (2025) · Meta analysis · n=5205
Flavan-3-ol interventions included epicatechin, epigallocatechin-gallate, cocoa products, tea, grape extract, and apples delivering 586 mg (95% CI 510, 662) total flavan-3-ols.
The effects of antidepressants on cardiometabolic and other physiological parameters: a systematic review and network meta-analysis
Lancet (London, England) (2025) · Meta analysis · n=534
We found strong evidence that antidepressants differ markedly in their physiological effects, particularly for cardiometabolic parameters.
Spironolactone in patients on chronic haemodialysis at high risk of adverse cardiovascular outcomes (ALCHEMIST): a multicentre, double-blind, randomised, placebo-controlled trial and updated meta-analysis
Lancet (London, England) (2025) · Meta analysis · n=1442
In patients with kidney failure on haemodialysis and with high risk of adverse cardiovascular outcomes, spironolactone did not reduce the incidence of major cardiovascular events.
Potassium binders for chronic hyperkalaemia in people with chronic kidney disease
The Cochrane database of systematic reviews (2020) · Meta analysis · n=688
Patiromer or sodium zirconium cyclosilicate may make little or no difference to death (any cause) (4 studies, 688 participants: RR 0.69, 95% CI 0.11, 4.32; I2 = 0%; low certainty evidence) in CKD.
Potassium has a higher evidence score (9/10 vs 8.5/10) and wins in 2 of 3 categories.
For reduce inflammation, Potassium has a higher relevance score (85 vs 70).
No known interactions between Epicatechin and Potassium have been documented in our database. However, always consult a healthcare provider before combining supplements.