I have had dumping syndrome since the removal of part of small and large intestines due to a benign tumor about 8yrs. ago. Shortly after I found a Dr. who knew why my food was passing through me about 15min.after I ate. He put me on Welchol and Pantoprazole. Now I think I should stop the pantoprazole because of the link kidney disease. What kind of symptoms do people have when they start showing possible kidney involvment?