When I was recovering from robotic surgery this past April (female stuff) and experiencing constipation and the joys of trying to get down on the floor to position myself like those little pictures that came with the Fleet enemas, I found out it was Hydrocodone that caused the problem so after quitting the Hydrocodone, and just staying with my googled list of "Foods to avoid constipation", everything came out just fine! Warm prune juice zapped in the Microwave and accompanying each meal really did the trick! Don't wanna go there again!