Atrial Fibrillation
Supplements studied for atrial fibrillation.
Overview
Six supplements are indexed for atrial fibrillation across 32 studies.
Vitamin C (DEX Score 68; medium effect size, high evidence, high trust) may lower post–heart surgery atrial fibrillation risk by roughly 27–53% when taken orally at 1–2 grams daily around the procedure, though U.S. Trials have been null. Fish Oil (DEX Score 44; very low effect size, very high evidence, medium trust) does not prevent atrial fibrillation in most research and higher doses may increase risk.
Vitamin D (DEX Score 36; very low effect size, medium evidence, medium trust) showed no benefit in a large healthy-adult trial but possible benefit in some older or deficient subgroups. Early berberine data (DEX Score 44) and caffeine (DEX Score 32; very low effect size, low evidence, medium trust) add limited signals. See the heatmap and evidence reviews below.
Effect graph
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Relevant supplements sorted by DEX Score.
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SupplementDEX Database
6 supplements for , and rated at least stars. All purchase bands. No minimum star filter.
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Evidence visualised
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Visual summaries of supplement evidence ranked by condition.
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