I have slow colon mobility. nothing works for me. I tried every fiber supplement and prescription know to man. My GI put me on an old fashioned remedy. Mineral Oil and Applesauce before bed. Please talk to your GI before use. I was bed for over a year because of this issue. I went from 128lbs to 93 lbs. The reason you feel full after eating is your colon does not empyt like it should and what is in your stomach has no where to go. I get horrible spasms beneath my ribs. Actually nothing you can do but keep your colon moving. The Gi is trying to keep me away from having surgery. Good Luck...