I have IBS , gastritis, and GERD. My IBS is chronic, have had this all my life. Also have diverculitis, constipation. I have been on Donnatal for quite a while, but no generic available. I do not take it one tab three times a day. I take it when needed. There is a program for people who need it but are low income through the PBM lab where i can get it free. Going to see my doctor in the morning. What should I tell him so he goes a long with this program? Nothing ever worked besides Donnatal. Is there anything?