My tongue has white spot and I realize, it is because of using listerine and now I stop from using it.I cannot eat well because it hurt my tongue very2 much especially when I eat spicy food ,hot drink and also ice cube..I already consult with doctors and they say it is not ulcer,but then they also do not know what is really happen to me.they give me glycerin of thymol liquid medicine and use it before meal so that my tongue cannot feel anything and I can eat . Almost 7month and my tongue still not okay.so I want to ask you what else that I can do to make my tongue okay like before?can yogurt heal my tongue?