Dose >45 mL may result to serious electrolyte disturbances eg, hypernatremia, hypokalemia, hyperphosphatemia, hypocalcemia, dehydration, metabolic acidosis, kidney failure, tetany & death. Patients are required to fast & only consume clear fluids for intake of breakfast, lunch & dinner one day prior to the procedure. Monitor fluid intake during treatment. Diuretic. Diabetes. Patients w/ heart problems, acute MI, unstable angina, preexisting electrolyte disorders, or patients who have been using drugs that can prolong QT intervals, ulcerative colitis, DM, reflux esophagitis, disturbed swallowing reflexes, decreased consciousness or which may cause regurgitation or aspiration. Severe renal impairment. Elderly & debilitated patients, & patients w/ colostomy or on low Na diet.