As allergy problems can go hand-in-hand with thyroid issues, I think it
is important to
recognize ill-effects whether it
is with medicine or food.
example, the allergies I developed are to corn, citrus, shellfish and papaya and their derivatives (certified, diagnosed, skin-test allergies!) - derivatives of all of which can be contained in the fillers or capsule. As a result, my bad reactions to medicines are usually not to the medicine proper but rather to the filler ingredients.