Soy allergies and Vitamin Supplement Intolerance

[j.]

If someone doesn't tolerate some vitamins, I think it could be an allergy to soy.

Many vitamins, for example, Throne K2 and Throne D/K, contain mixed tocopherols, I think to preserve the other vitamins. Mixed tocopherols almost always come from soy, so that could be causing it, even if soy is not listed.

I read this idea on a webpage, but right now don't remember where.