Hi. My son has had constipation issues forever. He has been taking Go lightly , 2 full jugs. All I've seen come out is brown watery fluid. The e.r. said he was severely backed up. So that's why we have the g.l.. I just wanted to know if he needs an x-ray to be sure it's all out . Oh by the way my son is 26. And he is a beautiful , sweet and lives with autism . That's why mom is writing you. He's hungry, what should I do? Also I wanted to ask if the tube down his nose for the go lightly when he was admitted to the hosp works any better than just drinking it. Thank you, Kelly Head