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Head-to-head evidence comparison — which supplement is right for you?
Multivitamin vs Riboflavin: they're closely matched on evidence (6 vs 6.5/10); they're alternatives for bone health — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Multivitamin and Riboflavin are closely matched across evidence, studies, and safety.
Verdict
Too few graded studies
Top outcomes
Verdict
Likely helps
5 of 5 studies with measurable effects showed benefit.
Top outcomes
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 (the one cited trial used 400 mg, none used 25 to 50 mg)
With food for better absorption, Morning with other B vitamins
Riboflavin or Riboflavin-5-Phosphate (R-5-P)
and 7 more not shown
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=5203
Pooled 5,203 non-overlapping participants from three cognitive substudies of the COSMOS trial of US adults aged 60 or older: COSMOS-Clinic (573), COSMOS-Mind (2,158) and COSMOS-Web (2,472).
Effects of cocoa extract and a multivitamin on cognitive function: A randomized clinical trial
Alzheimer's & Dementia (2023) · Rct · n=2262
COSMOS-Mind: 2,262 older adults (mean age 73, 60% women) randomised in a 2x2 factorial design to cocoa extract and to a commercial multivitamin-mineral, each versus placebo, for 3 years, with cognition tested by telephone.
Long-term multivitamin supplementation and cognitive function in men: a randomized trial
Annals of Internal Medicine (2013) · Rct · n=5947
5,947 male physicians aged 65 or older in the Physicians' Health Study II, randomised to a daily multivitamin or placebo, with up to 4 telephone cognitive assessments over 12 years.
Effect of Vitamin B2 supplementation on migraine prophylaxis: a systematic review and meta-analysis
Nutritional neuroscience (2022) · Meta analysis · n=673
Eight randomized controlled trials and one controlled clinical trial with 673 subjects were analyzed using meta-analysis.
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
Twenty-two trials were included in the systematic review and meta-analysis.
Riboflavin supplements for blood pressure lowering in adults
The Cochrane database of systematic reviews (2025) · Meta analysis · n=374
We included four RCTs, which contributed 374 total participants for quantitative synthesis, although the number of participants included for each outcome varied.
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 20).
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.
On Ozempic/Wegovy/Mounjaro? What actually helps — muscle preservation, GI relief, nutrient gaps (no upsell).
Safe, but no benefit if you’re not filling a gap. Who actually needs one — and who doesn’t.
Start with 2–3 foundations, add one at a time, build by goal — without wasting money.
Magnesium, riboflavin, CoQ10 — the supplements with real migraine-prevention evidence (and doses).
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.