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Head-to-head evidence comparison — which supplement is right for you?
Zinc wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
9 of 11 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
19 of 24 studies with measurable effects showed benefit.
Top outcomes
150-500mg trans-resveratrol
With a meal containing fat
Trans-resveratrol capsules
15-30mg daily
With meals
Zinc picolinate or zinc citrate
4-12 weeks
4-8 weeks
2-4 weeks
2-4 weeks
4-8 weeks
Immediate
A Systematic Review and Meta-Analysis of Randomized Controlled Trials on the Impact of Resveratrol Supplementation on Anthropometric Indices in Patients With Type 2 Diabetes
Phytotherapy research : PTR (2025) · Meta analysis · n=614
We determined overall effect sizes using a random-effects model and assessed heterogeneity using the I 2 statistic and Cochrane's Q test.
Resveratrol for the Management of Human Health: How Far Have We Come? A Systematic Review of Resveratrol Clinical Trials to Highlight Gaps and Opportunities
International journal of molecular sciences (2024) · Systematic review · n=200
Over the last 20 years, there have been almost 200 studies evaluating resveratrol across at least 24 indications, including cancer, menopause symptoms, diabetes, metabolic syndrome, and cardiovascular disease.
Resveratrol and Female Fertility: A Systematic Review
International journal of molecular sciences (2024) · Systematic review
The current literature, though limited, suggests that resveratrol may play a role in female infertility.
Efficacy of Zinc Supplementation in the Management of Primary Dysmenorrhea: A Systematic Review and Meta-Analysis
Nutrients (2024) · Meta analysis · n=739
Zinc supplementation significantly reduced pain severity compared to placebo (Hedges's g = -1.541; 95% CI: -2.268 to -0.814; p < 0.001), representing a clinically meaningful reduction in pain.
Effects of Daily Zinc Alone or in Combination with Other Nutrient Supplements on the Risk of Malaria Parasitaemia: A Systematic Review and Meta-Analysis of Randomised Controlled Trials
Nutrients (2023) · Meta analysis · n=1339
The effect sizes, represented as risk ratios (RRs) with 95% confidence intervals (CIs), were standardised by transforming them into log RRs and then pooling them using a fixed-effects or random-effects model depending on the heterogeneity across studies.
Prevalence of Zinc Deficiency in Inflammatory Bowel Disease: A Systematic Review and Meta-Analysis
Nutrients (2022) · Meta analysis · n=806
Pooled analyses by the IBD subgroup showed a total population of 1677 with CD, for an overall mean zinc deficiency prevalence of 54% and 95% confidence intervals (CI) ranging from 0.51 to 0.56, versus 41% (95%CI 0.38-0.45) in the UC population (n = 806).
Based on meta-analysis showing TNF-α reduction in young and obese subjects. Effect sizes were modest and heterogeneity was high (I2=60-74%). Higher doses associated with increased GI upset risk.
Based on meta-analyses showing reduced respiratory tract infections and improved immune markers (CD3/CD4). Effects primarily in deficient individuals. Take with food to reduce nausea risk.
AI-estimated from published studies. Interpret as directional guidance.
Zinc has a higher evidence score (9/10 vs 9/10) and wins in 2 of 3 categories.
Both Resveratrol and Zinc score equally (85) for fertility support.
No known interactions between Resveratrol and Zinc have been documented in our database. However, always consult a healthcare provider before combining supplements.