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Head-to-head evidence comparison — which supplement is right for you?
Grape Seed Extract vs Vitamin E: they're closely matched on evidence (6 vs 5/10); they're alternatives for reduce inflammation — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Grape Seed Extract and Vitamin E are closely matched across evidence, studies, and safety.
Verdict
Likely helps
8 of 10 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
20 of 24 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (2)
Outcomes where both Grape Seed Extract and Vitamin E have evidence — compare verdict strength side-by-side.
100-300mg (standardized to 95% OPCs)
With meals
Standardized extract (95% OPCs or proanthocyanidins)
100-400 IU daily (natural d-alpha-tocopherol)
With fat-containing meal, Any time of day
Natural mixed tocopherols (d-alpha, beta, gamma, delta)
4-8 weeks
8-12 weeks
8-12 weeks
4-8 weeks
4-8 weeks
8-12 weeks
With high doses
Phlebotonics for venous insufficiency
The Cochrane database of systematic reviews (2020) · Meta analysis · n=7690
Pooled data suggest that phlebotonics probably increase adverse events slightly, compared to placebo (RR 1.14, 95% CI 1.02 to 1.27; 37 studies; 5789 participants; moderate-certainty evidence).
Does the Grape Products Intake has an Effect on Body Weight in Adults: A Systematic Review and Meta-analysis of Randomized Controlled Trials
Current drug targets (2024) · Meta analysis · n=1284
The outcomes have revealed grape products intake to significantly decrease body weight (p = 0.001) and body mass index (p = 0.004) in obese participants, and also, a greater effect was observed when grape seed extract was used.
Low Dose Monacolin K Combined with Coenzyme Q10, Grape Seed, and Olive Leaf Extracts Lowers LDL Cholesterol in Patients with Mild Dyslipidemia: A Multicenter, Randomized Controlled Trial
Nutrients (2023) · Rct · n=105
LDL-C decreased by 26.46% on average (p < 0.001) during treatment with 10 mg of monacolin and by 16.77% on average during treatment with 3 mg of monacolin (p < 0.001).
Effect of vitamin B(2), vitamin C, vitamin D, vitamin E and folic acid in adults with essential hypertension: a systematic review and network meta-analysis
BMJ open (2024) · Meta analysis · n=2218
Among the five vitamins, only vitamin E was significantly more effective at reducing SBP (mean difference: -14.14 mm Hg, 95% credible intervals: -27.62 to -0.88) than placebo.
The Effect of Vitamin E Supplementation on Serum Aminotransferases in Non-Alcoholic Fatty Liver Disease (NAFLD): A Systematic Review and Meta-Analysis
Nutrients (2023) · Meta analysis · n=794
Three electronic databases (MEDLINE, CENTRAL, and Embase) were reviewed for randomized trials that tested vitamin E supplementation versus placebo or no intervention in patients with NAFLD, published until April 2023.
Vitamin E supplementation in pregnancy
The Cochrane database of systematic reviews (2015) · Meta analysis · n=19023
Women supplemented with vitamin E in combination with other supplements compared with placebo were at decreased risk of having a placental abruption (RR 0.64, 95% CI 0.44 to 0.93, seven trials, 14,922 participants, I² = 0%; high quality evidence).
Based on meta-analysis showing mean reductions of -6.07 mmHg systolic and -2.82 mmHg diastolic. Effects more pronounced in younger adults and those with metabolic conditions. Dizziness may indicate blood pressure reduction.
Based on meta-analysis showing 14.14 mmHg reduction in SBP. Effect size is modest and bleeding risk increases above 400 IU daily. Natural d-alpha-tocopherol preferred over synthetic forms.
AI-estimated from published studies. Interpret as directional guidance.
Both Grape Seed Extract and Vitamin E are closely matched — the best choice depends on your specific health goals.
For reduce inflammation, Grape Seed Extract has a higher relevance score (75 vs 50).
No known interactions between Grape Seed Extract and Vitamin E 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.