I have had three of them in the USA and I am sure they are just as good there. They will not be so bad they reall did not hust me i was a little sore for one day nothing serious. It is not a bad idea...
my brothers little girl got these sores in her mouth and through her esophogus and dtomach sometimes this can be stress or a virus in the herpies family that gives you like canker sores throughout...
This entire issue is so complicated , i am so sorry you are dealing with this with your son. I would get at least three other opinions and options as to treat ment and try to get his esophegus to...