Bisacodyl
constipation
"Am male., 210lbs & 57yrs.. Been dealing w/occasional constipation or partial movements for many years now. Have always relied on Dulcolax (or generic equivalent) for relief when the need arises for use. One tablet w/tall glass of water before bed is all that take - on rare occasions have taken 2 but again that is very rare. Normally 6-8hrs after I will have such a grand movement w/another sometime after that. Always a good feeling  of being flushed out of what was sitting rotting inside me. Can't say that have experienced the many bad side effects that have read by others posted. At the most I will get some minor cramps but they pass by quickly tho will say that Dulcolax does cause me to pass gas as the time nears for movement.."