It worked great for me - I've since started having physillium husk on my cereal and mixed in with a couple of glasses of water or juice a day and that seems to have helped to get things moving.
I had a c/section last time, they gave me metamucal to drink in the hospital after delivery - that wasn't doing much though so they were talking about giving me a depositary (sp?) - I think just talking about one scared my bowels into working because I didn't have any trouble after that!