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Head-to-head evidence comparison — which supplement is right for you?
Manganese vs Multivitamin: Multivitamin has the stronger overall evidence (6 vs 4/10); 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 wins 3 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Too few graded studies
Top outcomes
Verdict
Too few graded studies
Top outcomes
2-5 mg daily. The cited two-year trial gave 5 mg a day together with calcium, zinc and copper, so its result cannot be credited to manganese alone.
With food, Can take with other minerals
Manganese Bisglycinate or Citrate
1 serving daily (as directed on label, typically 1-2 tablets/capsules)
With breakfast, With lunch (if GI sensitive)
Capsule or softgel
and 7 more not shown
Overlap alone is not a clinical interaction. The total matters for people with liver disease, who clear manganese less well and can accumulate it.
Count manganese from food and all products. Use EFSA’s 8 mg/day safe level as a population reference, not a supplement allowance. If you have liver disease, check manganese-containing supplements with your clinician before use.
12-24 weeks
4-8 weeks
With chronic excess
3-6 months
4-8 weeks
2-6 weeks
6-12 weeks
Association of Blood Manganese and Preeclampsia: A Systematic Review and Meta-analysis
Biological trace element research (2024) · Meta analysis · n=1113
Pooled results showed that compared to normotensive control, women with PE had significantly lower blood Mn concentration (standardized mean difference: -0.36, 95% confidence interval: -0.50 to -0.22, p < 0.001; I2 = 67%).
Manganese Exposure and Metabolic Syndrome: A Systematic Review and Meta-Analysis
Nutrients (2022) · Meta analysis
Therefore, the present review examined the association between dietary and environmental Mn exposure, and MetS risk.
Manganese exposure and cognitive performance: A meta-analytical approach
Environmental pollution (Barking, Essex : 1987) (2023) · Meta analysis · n=18
Differences between the exposure and control groups in cognitive testing were synthesized by effect size Hedge's g.
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.
Multivitamin has a higher evidence score (6/10 vs 4/10) and wins in 3 of 3 categories.
For bone health, Multivitamin has a higher relevance score (80 vs 35).
Overlap alone is not a clinical interaction. The total matters for people with liver disease, who clear manganese less well and can accumulate it. Count manganese from food and all products. Use EFSA’s 8 mg/day safe level as a population reference, not a supplement allowance. If you have liver disease, check manganese-containing supplements with your clinician before use. 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.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.