I take Metamucil two or three times a day for just that reason. It keeps me going like clockwork.

Miralax extremely strong I found so be a bit careful working for you judith which is great but i awful cramps from it

Its a thing you really have to stick to constipation has a lot of consequences in pd as iv found to my cost !

Get her some Miralax she has to take every morning but ask her doctor is it ok to take PD is the blame for that.

High-dose vitamin B1 therapy solved my constipation problem in two weeks for good. See my profile.