I know this has been on many times before but since everyone has been kind enough to give me advice, thought I would post what finally worked for me. Go to National Parkinson Foundation and look for Constipation in Parkinson's Disease. There are two pages of info. on how you can best treat constipation. I found that 2 Fibercon in the evening along with a stool softener, neither which are habit forming, worked. The key is you have to drink lots of water. Hope this is helpful.