Dewd, i wonder if an alcoholics anonymous program could help you to stay off the soda-drink? You kinda keep relapsing, thinking a little bit wont hurt you, but then it does. Its like the same mindset, just a different substance. If you could get to a 30 day abstinence, ya know? Even the one day, one week awards could help you track your positive progress. Or just ask the gut dr or your therapist for suggestions? On how to attain this abstinence, at least til your ulcer heals. Medicine alone wont fix it, i dont think.