Do not use if you have kidney disease, except under the advice and supervision of a doctor. Ask a doctor or pharmacist before use if you are taking a prescription drug. Stop use and ask a doctor if: you have rectal bleeding or your nausea, bloating, cramping or abdominal pain gets worse. These may be signs of a serious condition. You get diarrhea, you need to use a laxative for longer than 1 week. Ask a doctor before use if you have: nausea, vomiting or abdominal pain, a sudden change in bowel habits that lasts over 2 weeks, irritable bowel syndrome. Allergy alert: do not use if you are allergic to polyethylene glycol. When using this product you may have loose, watery, more frequent stools. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a poison control center right away.