Corn, tomato in it: I have seen people react to ketchup because they had a tomato reaction or because they had a corn allergy. For the corn allergy, there are now ketchups available free of high fructose corn syrup, and I have seen eating those help. If tomato is the problem, a different flavoring will have to be selected. Other ingredients can also cause the problem.You can figure out which one by testing if lucky.
Answered 7/13/2012
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