Sensadine works.
Other then that avoid heat transfers
I.e eating something hot, the drinking something really cold seconds later.
Avoid citrus, atleast for me I cant touch any of those homo drinks, like sky blue or hynotiq ect. I cant eat life savers or any kind of like citrus candy.
However I have no problem with like oranges or cranberrys ect.
Get a second opinion aswell, they should never tell you theres nothing you can do.