Glycolax is the generic Miralax. It's also used frequently as a colonoscopy prep. Colyte and GoLytely are both Glycolax based. It's recommended for occasional use (less than 2 weeks) unless your doc suggests otherwise. At least some docs recommend high fiber and Glycolax be taken together.It's an osmotic laxative that, like CatRwall said, helps keep water in the colon, similar to Magnesium Citrate. Neither are as bad as stimulant laxatives that irritate your colon to get stuff out.Good luck with it. Is it working for you?Here's a good link to the straight poop on Miralax