How many time will i drink four liter of golytely (polyethylene glycol)?

Ask your doc: I think you are asking over what time period you can drink the golytely (polyethylene glycol). There should be some instructions on the bottle, if not ask the person who ordered the study for which you are preparing. Generally it should be drunk as quickly as you can tolerate without feeling nausea. However, how long before the procedure will depend on what time it is scheduled and again it is best to ask the doc.