Polyethylene glycol 3350 with electrolytes
"This is by far the easiest prep I’ve used. Yes, it smells and tastes awful, but you can overcome that somewhat by mixing ahead and chilling the mixture, using a straw, and chasing with a sip of whatever tastes good to you. Stand and walk a bit while you drink--it helps get things moving and dispels the bloated feeling. The prep starting working in 50 minutes both evening and morning, and worked thoroughly. The duration of action was 4 hours after the evening dose, 2 hours after the morning. No nausea, very little cramping, and not much soreness. I was able to have the procedure done and didn't have much trouble getting back to normal. I would use this again when necessary."