Colonoscopy scheduled next week. i already go 4 or 5 times a day and barely eat. should i take the entire prep? i'm afraid of dehydration.

Hydration: This is something I would discuss with the doctor doing your scope but generally to avoid dehydration I would focus on drinking a lot of water prior to the procedure. A good prep is what helps a better view of your colon and a more accurate diagnoses.

Yes: the prep is very important in success of the colonoscopy. you can stop drinking if rectal effluent is clear as urine . drink plenty of water to prevent dehydration.