As a nurse who works with older population and has had to start and "clean up" many of these preps WE usually get directions to Hold Aspirin/Coumadin/IB for 1-2 wks prior, Start clear liquid diet day before and have them drink phes citrate night before, than give dulcolax tabs 6 hrs before, give dulcolax supp. 2 hrs prior and occ. we get to do enemas but I think that depends on dtr.
It's not fun for pt. or us but very important thing to have done.