Bisacodyl
constipation
"I have very irregular bowel movements and experience constipation every now and then, I have tried senna tablets and things like that, however they don't do the job. Dulcolax is strong and does give me a few cramps about 8 hours after taking it, for me the cramps are just like period pain, after you go the pain stops. (I need to go 10 hours after taking dulcolax and don't eat for about 6 hours after I 'get it out') take before bed!"