Polyethylene glycol 3350 comes as a powder to be mixed with a liquid and taken by mouth. It is usually taken once a day as needed for up to 2 weeks. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take polyethylene glycol 3350 exactly as directed.

Polyethylene glycol 3350 may be habit-forming. Do not take a larger dose, take it more often, or take it for a longer period of time than your doctor tells you to.

It may take 2 to 4 days for polyethylene glycol 3350 to produce a bowel movement.