There was a thread on this lovely topic back on April 18th that had a variety of responses - try this link : http://neurotalk.psychcentral.com/thread187179.html

if it doesn't work, just go back a few pages and search for constipation. Good luck! (love the "prairie dogging" - don't you love what kids come up with?!)

ps - give the colace some time; unfortunately it doesn't work in a day I had to go to the colace with a stimulant, not just the regular colace, when I had bad patches.