1. The recommended dosage is 5 to 10 g daily, with an intravenous infusion rate of approximately 10 ml/min (1 g/min). 2.The dose for treatment of hypophosphatemia should be based on the degree of phosphate deficiency to avoid phosphate overload. Larger doses are recommended to be given twice daily, and the dose is halved when accompanied by heart failure. 3. The dose for children should be based on body weight (70-160mg/kg) and should not exceed the recommended dose.