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In all likelihood, if you are allergic to one zinc product, you will have a negative reaction to other products containing zinc as well. A 2003 study in the Lancet revealed that zinc allergies to one type of injectable insulin containing zinc was a positive indicator for allergy to other types of zinc-containing insulin. There have also been a few reports of people with zinc allergies having adverse reactions to dental products containing zinc.
True zinc allergies are rare; if you have had an adverse reaction to a product, it would be wise to be tested to see if it was in fact the zinc that caused the reaction, or whether you are sensitive to some other ingredient in the product.
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