Good luck with your condition. I don't take lactose, see below. I have tried laxatives and they are not consistent and have side effects like bloating, etc. And all say for occasional use. They disrupt the system if take continuously, I believe.

Last Dec the doc had me do non sedated colonoscopy. He could get through the colon as I watched on TV. I had had a baby years ago so figured I could stand it - no big deal. Most people in world don't get put out. Very interesting and it helped allow the scope to get through because I relaxed. Look up Osmotic gradients and Migrating motor complex and consider your electrolyte balance. OptiMag and K2+ Potassium are great supps and be sure to include prunes, squash, sweet potatoes, rhubarb etc in your diet. I like to soak ground 2T chia and 2 T flax seeds in prune juice overnight, then take half in the morning and half at night. Throw out the sugar, processed and refined foods and drink lot of water starting with a quart of hot water in the morning. Coffee and Smooth move are my back ups. I don't like coffee but it usually works. Good luck, @farmersmith