Calcium Phosphate, Tribasic Dosage

Medically reviewed by Drugs.com. Last updated on Jun 26, 2023.

Usual Adult Dose for Hypocalcemia

1 to 2 tablets orally once a day.

Usual Adult Dose for Osteomalacia

1 to 2 tablets orally once a day.

Usual Adult Dose for Osteoporosis

1 to 2 tablets orally once a day.

Usual Adult Dose for Pseudohypoparathyroidism

1 to 2 tablets orally once a day.

Usual Adult Dose for Hypoparathyroidism

1 to 2 tablets orally once a day.

Renal Dose Adjustments

Patients with renal dysfunction have an increased risk of hypercalcemia. Periodically checking the serum calcium level, especially if signs or symptoms of hypercalcemia are detected, is recommended.

Liver Dose Adjustments

Data not available

Precautions

Calcium phosphate is contraindicated in patients with hypercalcemia, renal calculi, or hypophosphatemia.

Dialysis

Calcium is removed by hemodialysis. To ensure a positive net calcium flux into the patient during dialysis, a dialysate calcium concentration of 3 to 3.5 mEq/L is usually required. Modest mid-dialysis hypercalcemia is not uncommon when this concentration is used.

Calcium is removed by peritoneal dialysis. The standard peritoneal dialysate contains 3.5 mEq/L of calcium (in 1.5% dextrose) to maintain a positive calcium balance and to prevent calcium losses. When higher concentrations of dextrose are used, the net calcium balance may be negative because of a greater convective removal of calcium during ultrafiltration, which counterbalances the diffusion of calcium from the dialysate to the patient.

Other Comments

Each tablet provides 600 mg of elemental calcium. The recommended daily allowance (RDA) of calcium is 800 mg. The RDA for pregnant or lactating women is 1,200 mg.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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