Hi Joan M, I've been on Linzess for a 1.5 months. I started on the lower dose (145 mcg) and had diarrhea for 4 days before it normalized. 2 weeks into it my IBS was triggered really badly and the lower dose didn't work anymore. I'm currently on 290 mcg. I feel it helps tremendously with reducing gut pain and moderately with preventing constipation. I still have to be really careful with my diet.
I didn't experience any gas issues. Are you sure it's not food related?