Bisacodyl
"After not having a BM in a week due to opiates, I decided to take some Dulcolax to help out. Ive taken it twice before once was awful and once was pretty okay. Currently sitting on the toilet dying a slow Dulcolax death. Decided to look it up and stumbled across your guys' experiences and it makes me feel better that it's not just me lol. So, thank you guys. Sure as hell is effective but prepare yourself for one hell of a journey."