After drinking Sodium Phosphate Salt Oral Solution, you will usually get diarrhea for half an hour to three hours, depending on the person. Usually patients will have diarrhea for half an hour to three hours after drinking this medication, it mainly works as a bowel cleanser. Nausea, vomiting, bloating, hiatal hernia, diarrhea, fatigue, dizziness, and allergic reactions may be the adverse effects of using this drug. Hyperphosphatemia, hypocalcemia, hypokalemia, hypernatremia and dehydration may be the result of overdose of this drug. It should be noted that this drug should not be used in patients with congenital megacolon, intestinal obstruction, ascites and renal failure. Need to use the drug under the guidance of a doctor, not blindly self-medication to avoid adverse effects.