I had the exact same problem with constipation.  It was a week since I went and I was getting scared so I bought the citracel caplets.  I shaved (only 1 pill) into my eggsalad.  Then I wanited because I didn't want to take too much.  Nothing happened so I shaved (1 pill) into my breakfast the next day.  Then 1 pill into my lunch that day.  By 3:00 that day I went and went and went.  It wasn't fun but I kept thinking it was a week and it wasn't healthy to not come out.  Since then I've gone on my own every 2-3 days.  Good luck