That's a LONG time to be on Dilaudid - how come? Stoping the narcotics will have a dramatic effect on the constipation issues. If he suffers from chronic pain of some sort and can't get off of them then what others have told you should work.

I spent a lot of time curled up in a fetal position on the bathroom floor from just those very issues. As soon as I weaned myself of the narcotics the problem went away. Constipation is actually asked about a lot here. Do a search on "all open forums" on the word and a number of threads will pop up.