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Phosphorus doses tend to range from 50 milligrams (mg) to 100 mg.
According to the Institute of Medicine, the recommended dietary intake (RDI) of phosphorus from all sources varies by age and pregnancy status, as follows:
- • Children birth to 6 months old: 100 milligrams per day (mg/day)
- • Children 7 to 12 months: 275 mg/day
- • Children 1 to 3 years: 460 mg/day
- • Children 4 to 8 years: 500 mg/day
- • Adolescents and teens 9 to 18 years: 1,250 mg/day
- • Adults over 18: 700 mg/day
- • Pregnant or lactating women 18 and under: 1,250 mg/day
- • Pregnant or lactating women over 18: 700 mg/day
Injectable phosphate is sometimes used to treat severe hypophosphatemia. Injections are generally indicated when the blood phosphorus level drops below 0.4 millimoles per liter (mmol/L). The normal range is 0.87 to 1.52 mmol/L. Phosphate injections are only given in a healthcare setting under the direction of a qualified specialist. *
