I have misplaced the post about constipation and my response about lactulose. According to the reference below, lactulose is a disaccharide, meaning that it is a single chemical which is NOT hydrolyzed in the system and not digested. That means that it should be quite safe for diabetics, and is till a very effective laxative. Michel Margosis > http://www.rxmed.com/monographs/chronulc.html > Marion Merrell Dow Pharmacology: Lactulose is poorly absorbed from the > gastrointestinal tract and no enzyme capable of hydrolysis of this disaccharide is > present in human gastrointestinal tissue. >