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Head-to-head evidence comparison — which supplement is right for you?
PEA wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
6 of 6 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
13 of 15 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both PEA and Red Clover have evidence — compare verdict strength side-by-side.
600-1200mg
With meals, Split into 2-3 doses
Micronized or ultra-micronized PEA
40-80mg isoflavones daily
With meals, Consistent daily timing
Standardized extract (40mg isoflavones per dose)
2-8 weeks
4-8 weeks
Ongoing
4-12 weeks
6-12 months
8-12 weeks
Ongoing
Extended Treatment with Micron-Size Oral Palmitoylethanolamide (PEA) in Chronic Pain: A Systematic Review and Meta-Analysis
Nutrients (2024) · Meta analysis · n=742
These two obtained scores corresponded to a 35.1% pain intensity reduction within the first month, followed by a further 35.4% during the second month.
Palmitoylethanolamide in the Treatment of Chronic Pain: A Systematic Review and Meta-Analysis of Double-Blind Randomized Controlled Trials
Nutrients (2023) · Meta analysis · n=774
PEA was found to reduce pain scores relative to comparators in a pooled estimate, with a standard mean difference of 1.68 (95% CI 1.05 to 2.31, p = 0.00001).
Navigating agitation in neurodevelopmental disorders: A comparative study of pharmacotherapies via network meta-analysis in children and adults with autism spectrum disorder or intellectual disabilities
Journal of psychopharmacology (Oxford, England) (2025) · Meta analysis · n=2503
Importantly, these treatments were generally well-tolerated, with no significant increase in all-cause dropouts compared to placebo, highlighting their suitability for clinical use in managing agitation in individuals with ASD or ID.
The effectiveness of nutritional supplements in improving polycystic ovary syndrome in women: a systematic review and network meta-analysis
Reproductive biology and endocrinology : RB&E (2025) · Meta analysis · n=5501
Inositol significantly decreased total cholesterol and triglyceride levels, while curcumin was most effective in improving low-density and high-density lipoprotein cholesterol levels.
Role of Phytoestrogen-Rich Bioactive Substances (Linum usitatissimum L., Glycine max L., Trifolium pratense L.) in Cardiovascular Disease Prevention in Postmenopausal Women: A Systematic Review and Meta-Analysis
Nutrients (2022) · Meta analysis
The effect of soy protein on the lipid profile showed a significant decrease in TC levels: WMD = -0.15; 95% CI: -0.25-0.05; p = 0.0048, LDL-C levels: WMD = -0.15; 95% CI: -0.25-0.05; p = 0.0067, as well as a significant increase in HDL-C levels: WMD = 0.05; 95% CI: 0.02-0.08; p = 0.0034.
Neither soy nor isoflavone intake affects male reproductive hormones: An expanded and updated meta-analysis of clinical studies
Reproductive toxicology (Elmsford, N.Y.) (2021) · Meta analysis · n=752
Sub-analysis of the data according to isoflavone dose and study duration also showed no effect.
Based on multiple meta-analyses showing ~35% pain reduction. Studies primarily used micronized formulations which may have better bioavailability than standard forms. Most benefits observed within 4-6 weeks of treatment.
Based on meta-analysis showing statistically moderate reduction in daily hot flash frequency. Effect size is modest and individual response varies significantly.
AI-estimated from published studies. Interpret as directional guidance.
PEA has a higher evidence score (7.5/10 vs 7.5/10) and wins in 2 of 3 categories.
For reduce inflammation, PEA has a higher relevance score (85 vs 55).
No known interactions between PEA and Red Clover have been documented in our database. However, always consult a healthcare provider before combining supplements.