Usually you have to pick 1 thing to take for a few days to see if that is what is giving you a reaction.
You might have to do it with each thing you take just 1 at a time.
Very time consuming, but it does eliminate the guilty item.
Few people have the paitence to do this that is why they make allergy Meds.
If thru all testing you have still hives to all items,
Then it is in your system & maybe Zapping would kill off the culprit..