The best multivitamins of 2026

Four bodies run public, searchable registers, and a product is either listed or it is not: NSF Certified for Sport at nsfsport.com, USP Verified at quality-supplements.org, and Informed Sport and Informed Choice at wetestyoutrust.com. Type the brand in, and you see the exact products they have tested. It takes a minute, and it is the difference between a brand saying it is clean and a third party confirming it.

On this page that check overturned two things at once. The earlier version called Centrum "USP verified" when Centrum is in none of the registers and does not claim USP itself, and it never mentioned that Ritual actually holds a USP mark. The certifier settled both in the time it takes to run two searches. Whenever a page tells you a supplement is certified, do the search rather than trust the sentence.

Menstruating women lose iron monthly and often run low, so women's multivitamins usually include it. Men and post-menopausal women rarely need extra iron, and a steady surplus is a genuine risk rather than a harmless one, so men's and seniors' formulas usually leave it out. That single decision is why almost every brand here sells a separate men's and women's version.

Because of that, three of the products above are the women's formula, and each has a men's counterpart: Ritual makes Essential for Men 18+, Garden of Life makes RAW ONE for Men, and Centrum makes a Multivitamin for Men. The other two are unisex. Nature Made's tablet is for women and men and still includes iron, which makes it the simplest pick if you just want one bottle that covers everyone. Thorne is unisex too but carries no iron at all, so a menstruating woman may want the Nature Made tablet or one of the women's formulas instead.

Thorne uses the pre-converted nutrient forms: folate as L-5-MTHF rather than folic acid, and B12 as methylcobalamin rather than cyanocobalamin. A common gene variant known as MTHFR makes some people less efficient at converting the cheaper folic acid, and for them the pre-converted folate is the safer default. For most people the difference is modest, so this is a reason to prefer the active forms, not a reason to panic about the basic ones.

The same logic applies to minerals. Magnesium oxide is poorly absorbed; a bisglycinate chelate, which is what Thorne uses, is absorbed far better. If you want the most bioavailable formula and are willing to pay for it, that is the Thorne end of the page. If you mainly want independent verification at a normal price, Nature Made's USP-verified tablet gets you that without the premium.