Multivitamin
Also known as: multivitamin-multimineral, MVM, daily vitamin, multi, Centrum, prenatal vitamin
Effective Dosage
No established universal dose — varies by formulation and population
What the Science Says
A multivitamin is a single supplement containing a combination of essential vitamins and minerals. The provided studies show it may modestly slow biological aging markers in older adults, improve outcomes in preeclampsia when combined with standard treatment, and help protect against nutrient deficiencies — especially in people with poor diets, those undergoing caloric restriction, or post-bariatric surgery patients. Benefits appear most pronounced in people who are already nutritionally deficient or have poor dietary quality.
What It Doesn't Do
Won't lower blood pressure in people who already eat well. Not superior to nutrition education alone for correcting vitamin deficiencies. Doesn't replace a balanced diet. No proven benefit for preventing hypertension in the general population. The epigenetic aging effects found are small and their real-world clinical meaning is still unknown.
Evidence-Based Benefits
Multivitamins are designed to provide a range of vitamins and minerals that may be lacking in an individual's diet. Systematic reviews and clinical trials suggest that they can help fill nutritional gaps and support overall health, particularly in populations with specific deficiencies.
Strong EvidenceEffective at: No established dose
Source: auto-research
Absorption & Bioavailability
Moderate — varies widely by nutrient form, supplement format (tablet vs. gummy vs. liquid), and individual factors like gut health and dietary context. Some children's gummy products contain unlabeled or excess minerals like manganese.
Red Flags to Watch For
- Children's multivitamins may contain manganese levels exceeding safe upper limits, especially when combined with dietary intake — 34% of tested products exceeded IOM upper limits in one study
- Multivitamin labels may be inaccurate — one study found 88.5% of products with manganese listed contained more than labeled, with a mean 42.5% excess
- Rare but serious allergic reactions (including Kounis syndrome / allergic angina) have been reported with injectable multivitamin formulations
- People with poor diets may get a false sense of security from taking a multivitamin instead of improving food quality
- Post-bariatric surgery patients relying on multivitamins alone may still develop bone loss if calcium and vitamin D intake remains inadequate
Products Containing Multivitamin
See how Multivitamin is used in these analyzed products:
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-06