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Head-to-head evidence comparison — which supplement is right for you?
Multivitamin and Riboflavin are closely matched across evidence, studies, and safety.
Verdict
Probably helps
8 of 12 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
8 of 10 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Multivitamin and Riboflavin have evidence — compare verdict strength side-by-side.
1 serving daily (as directed on label, typically 1-2 tablets/capsules)
With breakfast, With lunch (if GI sensitive)
Capsule or softgel
25-50mg for general health; 400mg for migraine prevention
With food for better absorption, Morning with other B vitamins
Riboflavin or Riboflavin-5-Phosphate (R-5-P)
Generally low clinical concern—riboflavin is not known to be toxic at therapeutic doses. Urine discoloration is expected. The main concern is unnecessary duplication. At high doses (400mg/day), no additional B2 benefit is expected from the multivitamin quantity.
If using high-dose riboflavin for migraine prophylaxis (400mg/day), the multivitamin B2 content is redundant but not harmful. Inform patients that bright yellow urine is expected. No dose adjustment needed unless bothersome side effects occur.
3-6 months
4-8 weeks
2-6 weeks
6-12 weeks
3 months
2-4 weeks
Immediate
Effect of multivitamin-mineral supplementation versus placebo on cognitive function: results from the clinic subcohort of the COcoa Supplement and Multivitamin Outcomes Study (COSMOS) randomized clinical trial and meta-analysis of 3 cognitive studies within COSMOS
The American Journal of Clinical Nutrition (2024) · Meta analysis · n=5765
Multivitamin-mineral supplementation significantly improved global cognition vs placebo (pooled meta-analysis)
Multivitamin Supplementation Improves Memory in Older Adults: A Randomized Clinical Trial
The American Journal of Clinical Nutrition (2023) · Rct · n=3562
Daily multivitamin supplementation for 3 years significantly improved immediate and delayed recall memory
Effects of cocoa extract and a multivitamin on cognitive function: A randomized clinical trial
Alzheimer's & Dementia (2023) · Rct · n=2262
Multivitamin-mineral supplementation (not cocoa extract) drove significant cognitive improvements in COSMOS-Mind
Effect of Vitamin B2 supplementation on migraine prophylaxis: a systematic review and meta-analysis
Nutritional neuroscience (2022) · Meta analysis · n=673
Vitamin B2 supplementation significantly decreased migraine days (p = .005, I2 = 89%), duration (p = .003, I2 = 0), frequency (p = .001, I2 = 65%), and pain score (p = .015, I2 = 84%).
Effects of selected dietary supplements on migraine prophylaxis: A systematic review and dose-response meta-analysis of randomized controlled trials
Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology (2025) · Meta analysis
In adults, compared with placebo, these supplements did not significantly affect other outcomes, and omega-3 supplementation did not yield a statistically significant reduction in any of these outcomes.
Riboflavin supplements for blood pressure lowering in adults
The Cochrane database of systematic reviews (2025) · Meta analysis · n=320
The evidence for the effect of oral riboflavin supplements on systolic and diastolic blood pressure is very uncertain.
Based on COSMOS trials (n=5765) showing equivalent of 2.0 years cognitive decline prevention. Effects most pronounced in those with cardiovascular disease. Study duration was 3 years. Effectiveness reflects conservative interpretation of memory and global cognition improvements.
Based on meta-analysis showing significant reduction in migraine frequency, days, duration, and pain score. High heterogeneity (I2=65-89%) in pooled analyses suggests variable individual responses. Most studies used 400mg daily dose.
AI-estimated from published studies. Interpret as directional guidance.
Both Multivitamin and Riboflavin are closely matched — the best choice depends on your specific health goals.
For bone health, Multivitamin has a higher relevance score (80 vs 75).
Generally low clinical concern—riboflavin is not known to be toxic at therapeutic doses. Urine discoloration is expected. The main concern is unnecessary duplication. At high doses (400mg/day), no additional B2 benefit is expected from the multivitamin quantity. If using high-dose riboflavin for migraine prophylaxis (400mg/day), the multivitamin B2 content is redundant but not harmful. Inform patients that bright yellow urine is expected. No dose adjustment needed unless bothersome side effects occur. Consult a healthcare provider for personalized advice.