Why Your Multivitamin Might Be Doing Nothing
Three reasons your daily multivitamin probably isn't moving lab values — and what to do instead.
The multivitamin lobby spent decades convincing people that a single morning pill was a baseline insurance policy. The evidence on multivitamins moving meaningful health outcomes is mixed at best — and for the average person already eating reasonably, often null.
Three reasons most multivitamins underdeliver.
A bad multivitamin is expensive urine. A good one is fine, but it's not what most people need.
**Form matters more than dose.** Cheap multivitamins use synthetic folic acid, cyanocobalamin, magnesium oxide, and inorganic minerals. For a non-trivial percentage of the population with MTHFR or methylation variants, those forms convert poorly. The label says you got 100% of your B12; your actual cellular uptake might be 20%.
**Absorption maxes out fast.** Take a multivitamin with 10 different fat-soluble and water-soluble nutrients at once and they compete for the same intestinal transporters. Iron and zinc, calcium and magnesium, fat-solubles needing fat that isn't there. The label dose is theoretical, not delivered.
**Most deficiencies are specific, not general.** The person who's low on Vitamin D doesn't also need 100% of their boron and chromium. They need 2000 IU of D3. The person low on iron needs iron, not a generic 18 mg in a pill they take with their morning coffee (which blocks iron absorption).
The cleaner approach: a yearly micronutrient panel, identify what's actually low, then supplement those specifically — with the bioavailable forms.
And the role of IV therapy in this picture: for acute moments and meaningful gaps, IV bypasses every absorption question and delivers the dose you actually need. Then maintain with targeted oral supplementation.
