Sorry I haven't replied sooner. I've been away from home at Miami Beach and not near my son or my computer where I have all the info. We'll be here another few days until we get tired and go home. I'll write as soon as i can.
All I can think of is the over-the-counter laxative that my gastroenterologist told me to get to prep for a colonoscopy, but I can't remember the name, sorry. I guess any stronger one would work.