Osmotic laxative drugs are used to wash-out the intestine before some medical procedures are undertaken. Their action is based on the fact they are poorly or not absorbed at all (Nice 2000). By that way it is forced a great amount of water to be taken out from the bowel originating a profuse diarrhea. Take this into account in order to avoid dehydration on the mother who is already loosing about 1 liter of water by producing milk every day.