Why Your Multivitamin Probably Isn't Working
By Abhi Wadhwa, Co-founder, EX1
Many multivitamins use cheaper, poorly absorbed forms of key nutrients. Here is how to read the label and find a multi that actually delivers.
Form is one reason many multivitamins deliver less than the label implies: the version of each nutrient on the label is often a cheaper, less bioavailable form, not the one your body absorbs well. The pill delivers the daily value on paper, but a poorly absorbed form passes through largely unused. You get the receipt without the result.
Nutrient form decides how much you absorb
Nutrient form is the chemical structure a vitamin or mineral is delivered in, and it determines how much reaches your bloodstream. Studies in Magnesium Research report magnesium oxide is absorbed at around 4 percent, while chelated and organic magnesium forms are better absorbed and gentler on the gut. Same milligram on the label, very different absorbed dose.
B9 is delivered as Folic Acid (Pteroylmonoglutamic Acid) and B12 as Cyanocobalamin, the FSSAI Schedule I permitted forms for Indian nutraceuticals. The same logic runs through the mineral column. Iron sulphate is harsh on the gut; iron bisglycinate is gentler and better tolerated. Calcium carbonate needs stomach acid to absorb; calcium citrate works across a fuller range of gastric conditions. The chelated or organic form generally costs the manufacturer more, which is why mass-market multis often ship the lower-cost form.
How to read a multivitamin label: ignore the percentage daily value column at first and read the form of each nutrient. If the magnesium says “oxide” and the iron says “sulphate”, you are looking at the lower-cost daily multi. The bioavailable forms (bisglycinate or citrate for minerals, Folic Acid for B9, Cyanocobalamin for B12) should be named explicitly.
Dose matters as much as form
Form only counts if the dose is real. A small dose of a poorly absorbed form can deliver less absorbed elemental magnesium than a larger dose of a better-absorbed one. Vitamin D shows why the dose has to be read in context: an RDA-level daily amount is a maintenance dose that keeps everyday intake from falling short, a different job from correcting an established deficiency.
The gap between an adequacy label and clinical need is widest with vitamin D. Research in the Indian Journal of Clinical Biochemistry documents that vitamin D deficiency is widely prevalent among urban Indian adults, and correcting a diagnosed deficiency is a clinical matter that typically uses higher, doctor-guided doses. A daily “100% RDA” for D3 is a maintenance figure, the amount that keeps everyday intake adequate, not a deficiency-correction dose or a promise of clinical adequacy on its own.
The EX1 take
EX1 Multivitamin Men and EX1 Multivitamin Women 40+ are built on the bioavailable-form principle: cyanocobalamin B12 and Folic Acid B9 at the FSSAI Schedule I permitted forms, Riboflavin and Pyridoxine HCl for B2/B6, vitamin D3 at 100% adult RDA, magnesium bisglycinate, K2 as MK-7. Per-batch tested at WHO-GMP certified facilities, every dose declared on the label, no proprietary blends to hide behind. A daily multi is a years-long habit, so the form of each nutrient compounds over the same horizon.
Related reading: What a proprietary blend hides.