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Head-to-head evidence comparison — which supplement is right for you?
Red Clover wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Mostly mechanism / observational
Verdict
Likely helps
13 of 15 studies with measurable effects showed benefit.
Top outcomes
300mg standardized extract twice daily (providing ~50mg aescin per dose; ~100mg aescin/day)
with-meals
Aescin-standardized, enteric-coated seed extract
40-80mg isoflavones daily
With meals, Consistent daily timing
Standardized extract (40mg isoflavones per dose)
2-12 weeks
2-8 weeks
Days
4-12 weeks
6-12 months
8-12 weeks
Ongoing
Horse chestnut seed extract for chronic venous insufficiency.
The Cochrane database of systematic reviews (2012) · Meta analysis
Significantly reduced leg pain, edema, and itching vs placebo
Horse chestnut seed extract for chronic venous insufficiency.
The Cochrane database of systematic reviews (2006) · Meta analysis
Reduced leg volume and ankle/calf circumference
Horse-chestnut seed extract for chronic venous insufficiency. A criteria-based systematic review.
Archives of dermatology (1998) · Systematic review
Most RCTs favored HCSE over placebo
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 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.
Red Clover has a higher evidence score (7.5/10 vs 7/10) and wins in 2 of 3 categories.
For reduce inflammation, Red Clover has a higher relevance score (55 vs 45).
No known interactions between Horse Chestnut and Red Clover have been documented in our database. However, always consult a healthcare provider before combining supplements.