Chicory root fiber, especially when added to processed foods like bars or cereal, can cause gas, bloating, or other GI symptoms. This is even more likely when eaten in large amounts. We would advice patients to assess their tolerance, as this is not true for everyone. Here's even more on dietary fiber
https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-depth/fiber/art-20043983