Loading…
We use essential cookies (authentication, your saved goals/stack) by default. With your permission we'll also enable privacy-respecting analytics (Vercel Web Analytics, anonymous load-time metrics) and error-replay diagnostics (Sentry — DOM snapshots only when an error fires) so we can fix bugs faster. Learn more about cookies
Head-to-head evidence comparison — which supplement is right for you?
Multivitamin and Vitamin B6 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
12 of 16 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Multivitamin and Vitamin B6 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
25-100mg daily
Morning with food, Can take with other B vitamins
P-5-P (Pyridoxal-5-Phosphate)
Combined B6 intake may exceed safe thresholds, increasing risk of sensory neuropathy, photosensitivity, and ataxia with long-term use.
Audit total daily B6 from all sources. Keep combined intake below 100mg/day; ideally below 50mg/day for long-term use. Pyridoxal-5-phosphate (P5P) form in some supplements is less associated with toxicity at equivalent doses but risk persists.
3-6 months
4-8 weeks
2-6 weeks
6-12 weeks
2-4 weeks
1-2 cycles
Months of high doses
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
Dosage exploration of combined B-vitamin supplementation in stroke prevention: a meta-analysis and systematic review
The American journal of clinical nutrition (2024) · Meta analysis · n=76664
In areas without and with partial folic acid fortification, combined B-vitamin supplementation significantly reduced the risk of stroke by 34% [RR: 0.66; 95% confidence interval (CI): 0.50, 0.86] and 11% (RR: 0.89; 95% CI: 0.79, 1.00), respectively.
Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
The Cochrane database of systematic reviews (2018) · Meta analysis · n=83000
We found that giving B vitamin supplements to cognitively healthy adults, mainly in their 60s and 70s, probably has little or no effect on global cognitive function at any time point up to 5 years (SMD values from -0.03 to 0.06) and may also have no effect at 5-10 years (SMD -0.01).
Drug Efficacy in the Treatment of Antipsychotic-Induced Akathisia: A Systematic Review and Network Meta-Analysis
JAMA network open (2024) · Meta analysis · n=492
No association between effect sizes and psychotic severity was found.
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 systematic review of nutritional interventions for PMS psychological symptoms. Evidence quality limited by study heterogeneity and need for more consistent protocols.
AI-estimated from published studies. Interpret as directional guidance.
Both Multivitamin and Vitamin B6 are closely matched — the best choice depends on your specific health goals.
For support immune system, Multivitamin has a higher relevance score (82 vs 65).
Combined B6 intake may exceed safe thresholds, increasing risk of sensory neuropathy, photosensitivity, and ataxia with long-term use. Audit total daily B6 from all sources. Keep combined intake below 100mg/day; ideally below 50mg/day for long-term use. Pyridoxal-5-phosphate (P5P) form in some supplements is less associated with toxicity at equivalent doses but risk persists. Consult a healthcare provider for personalized advice.