Vinegar is acid really from the furit of things like apples and what not ! it may have slightly burned his
tender throat skin and will go away on its own in a bit . some people can not take this straight like i can or others and they need chaser. and this is very good with water to heal and help certain things in the body. but this is not a dagger unless he has pain after a day or two and if you think that he is worse take him to the doctor !

