Helen - Bowel motility is usually greatly reduced in Parkinson's, and meds which cause dry mouth, etc., don't help. Your father can use stool softeners, and fiber additives such as Metamucil, if you can get him to take them/it. One lady in our support group swears by a mixture of one part warm prune juice and one part non-dairy coffee creamer. She says it works in a very short time, so don't drink it and then leave home! I find the real trick is to get the patient to try some of this yukky-sounding stuff. Constipation can actually be fatal in Parkinson's, and if nothing else, interferes with the timely absorption of the medications. It's good that you're on top of the problem. I would encourage you to work with your husband's doctor to try to improve the situation. It will probably be an on-going battle without an easy remedy. Margie [log in to unmask]