My son is 14 and has been diagnosed with having severe allergy reactions to 621 and 627 flavour enhancer. All the foods you list are foods that he also can’t eat. He can have very severe reactions to these where his throat swells and he can’t breath and other times where he comes up in welts all over his body and lips and eyes swell quite severely. I have four boys and it becomes very difficult to feed them with one being allergic to so much food – mother, Victoria.