In hindsight which I had known to try OTC pepsid ac on my own just to see if it helped the burning in my mouth. It works so quickly I suspect it might have but can’t be sure…….since I really did not see any improvement while taking the prescribed medicines for about 30 days. I just have a suspicion that I should have reached for a pepsid ac complete chewable instead of reaching for a pain pill. The emergency room dr. did write in her emergency room notes I was to pick up pepsid ac complete on way home from emergency room to start taking daily but both my husband and I missed those instructions….unfortunately!