There is no such thing as a medical bowel wash, only an enema. There are many drugs that may be applied to enemas, such as mannitol, lactulose or soap and water. There are also some doctors who apply coffee for enema, coffee enema lacks some scientific basis, theoretical basis. So using something topical or something less certain for enemas is not recommended. Enemas are mainly for the treatment of constipation, intestinal flatulence, intestinal obstruction and other such conditions, that is, the treatment of bowel cleansing.