This is my first visit and I am so glad to find you!I do not know anyone else who has IBS so no one to talk to.I was diagnosed in 1993 after years of IBS.Internist put me on Zantac and Donnatal.Recently I lost weight, then noticed what felt like original IBS pain, burning and D increased. I increased Zantac. Soon after I began to feel weak and shaky then developed mild nausea. Called doctor 3 weeks ago, she said little virus. Called again but no appt available until next week. Close to collapse, I went to the ER where they ran blood tests and said all was negative. Has anyone had any similar problems? I have never had this weakness, shakiness or loss of apetite. Doctor finally has appt time this week so wonder if I should ask about different meds.I don't see other BB folks on Zantac. Any suggestions give me would be greatly appreciated.Sorry this is so long.