Not all vitamins, but anything enriched usually has corn as the carrier. I'm currently using solaray vitamins, though I'd like to find something different. Kirkman labs is supposedly corn free.

The thing to ascertain with vitamins is whether or not they were grown on or derived from corn, as well as that none of the excipients (binders) contain corn derivatives. Sometimes the company will say its corn free because the corn has been processed out, but many sensitive individuals still react to the non-protein traces that are left.

Imagine says their broth is corn free. I react but I'm allergic to so many other things, I don't know what I'm reacting to in there.

Corn is a very difficult allergen to manage. We're trying to come up with a safe list on the avoiding corn forum at Delphi, but it keeps changing! SAo frustrating!