constipation, chronic
"I have been on a large dose of Morphine for years for my worsening back problems. I have gone as long as 8-10 days without a bowel motion. Lactulose is the only thing that has worked. Usually within 4-6 hours I will start having BM's. I haven't had any side effects, not even cramping. I use 15 to 30 cc on an as needed basis. 
I did read that you should not use Lactulose if you are diabetic because it is a sugar."