I just started getting the digestive symptoms of CF. I am currently on ultrase 20. I had my first IV of Zosyn a couple months ago because of a terrible lung infection. It seems like since then I have had so many problems with my pancrease aching after I eat. Lots of problems with b/m's. Do you think it may be from my enzymes? How do you know when your enzymes need to be changed? Has anyone else had problems after being on Zosyn? I know I can get symptoms at any time at some severity or another but it just seems different that after being on Iv I have many digestive problems everyday and before that I had only the pancrease ache once or twice a year with none of the intestinal stuff. Eva