Are you talking about food allergies or external one's Jbug (or both)? They're different animals.

True food allergies are very different from food sensitivities or things like lactose sensitivity (inability to make enough lactase in the small intestine to deal with it) which just needs a pill one can get at the grocery/drug store and one is good to go. A true food allergy, one knows because one can't eat the food without hives, etc. and that can't change, no "cure" for that. But food sensitivities can be harder, have to do with one's gut flora/fauna and other bodily health, etc. and can be a pain in the you-know-what. Having to take antibiotics will mess that up in a heartbeat. Some people undergo the whole bland-reintroduce-one-a-day sort of diet for several weeks and then stop eating what they find they're sensitive to but some of that I think can mess one up more as cutting out whole types of food can wreck nutrients one needs and cause a whole cascading effect. It's so complicated, nutrition on top of physical problems.

I've tried two or three OTC allergy pills for sinus/reflux/asthma problems and had some good results. I like Alavert most for that but use different stuff if I want to sleep more at night, etc. I've only been tested for metal allergies and they did a patch test on my back for that (I'm allergic to cobalt and nickel and have to have special, certified crowns made when I have dental work that cost $100+ more each). But the Alavert helps with the two cats :-) and/or children's Benadryl grape chewables got rid of any hives my one, previous cat use to give me each evening.