Librax
"I also have Crohn's and ulcerative colitis. I was started on Librax upon getting my initial diagnosis, took it for several weeks and kept telling everyone how "I've never felt better in my life" and then one day on the way to work I nearly fell asleep behind the wheel of my car on the drive into work. There is a chemical in chlordiazepoxide that has a half-life of over 400 hours, so the 'benzo' part of this medicine can build up pretty quickly. I stopped the medication for awhile and have since gone back on it without any of the previously mentioned problems, but I did cut my dose down from 1 pill every 8 hours to 1 pill every 10-12.....so only 2 pills a day instead of 3. I still get the relief I need, but do not get drowsy at all."