A:Most colonoscopy prep solutions begin working two to three hours after they are consumed, although this varies between products. Another dose may be needed if bowel movements do not occur when expected. If bowel movements do not occur after an additional dose, consult your medical care team. ...
If you're worried about bloating, cramping, gas, or other side effects, talk to your doctor about a hybrid bowel prep. These use an osmotic laxative (the active ingredient that makes you poop) along with one that may cause fewer side effects. What colonoscopy prep is best for kidney patie...