Hi,I have chronic diarrhea, usually many times every day. I was just put on levsin and a small dose of amitriptyline to relieve that and the pain. Now I'm constipated! My bowel movements for the past two days have just been tiny hard pieces of stool and mucus. I know constipation is a common side effect of both drugs, but before I didn't care because I had diarrhea. I've started doing high fiber and drinking plenty of water, but no effect yet. I really don't want to take laxatives because I always have diarrhea, but do I need to? And should I stop taking the medicines if the constipation continues?