I started taking two products by Grandma's Herbs - SuperLax, and Colon Cleanse.
Stuff like that is a bad idea since you can become dependent on them... better to do it naturally with fiber. Caffeine from...
Pills won't help, but try using a fiber supplement (like Metamucil powder) to help "clean the pipes"... esp. if you're eating a lot of meat (which tends to linger).
It definitely makes you feel skinnier.