The Original Grape-Nuts, which now bear a non-GMO label, no longer contain vitamins A, D, B-12 and B-2. Claire Eggers/NPR hide caption toggle caption Claire Eggers/NPR The Salt Why Did Vitamins Disappear From Non-GMO Breakfast Cereal? December 5, 2014 When GMO-free cereals landed in supermarkets, some vitamins had mysteriously vanished from them. But these vitamins don't necessarily come from genetically altered organisms.