most the time, from what i've been able to find out, is not caused by too much stomach acid (hydrochloric acid-HCl), it's too much gastrin........gastrin is so very caustic & can cause so much misery..........when too much gastrin is over produced, it's usually caused by not enough HCl being produced.......the body tries to compensate by over producing gastrin & or histamine.........gastrin & histamine r secreted 1st in order to get the stomach to produce HCl..........when HCl increases, the gastrin & histamine slow down or stop.......increase the stomach acid..........betaine hydrochloride might help......try it & if not, then u need the actual thing..........that's what i take.........my stomach couldn't produce enough HCl & i was miserable for yrs.......it was so awful........