If it is caused by acid reflux, try taking some Betaine hydrochloric acid with your first bite of food. Don't take it on an empty stomach!
Hope this helps.
Suggestions I found when I searched were:
Drug reaction. Any new medications?
Check for tonsil stones.
Try flossing.
Maybe it has something to do with acid reflux.
Hi, do you have acid reflux? It doesnot appear from coming in but from coming up.