Sodium acid phosphate

Sodium acid phosphate is a medicine used to treat high calcium levels in the blood and hyperparathyroidism. It works by binding with calcium which makes their level go back to normal.

Sodium acid phosphate can be taken with or without food. It should be taken exactly as prescribed by your doctor. Your doctor will decide the dose and how often you should take them. You should take this medicine regularly to get the most benefit from it. Do not stop taking the medicine even if you feel better unless the doctor tells you so.

The medicine is generally well tolerated, however, it may cause nausea and diarrhea in some people. Let your doctor know if any of these side effects do not go away with time or get worse. Before using this medicine, inform your doctor if you have any problems with your kidney or liver. You should also tell your doctor all the other medications you are taking.

• Treatment of High calcium levels in the blood
• Treatment of Hyperparathyroidism

Treatment of High calcium levels in the blood
Calcium is a mineral found in different places in your body and has many functions including bone growth. Most of your calcium should be in your bones. When you have more calcium in your blood than normal it is called hypercalcaemia. Sodium acid phosphate reduces the amount of calcium in your blood.

Being immobile makes hypercalcaemia worse. Whenever possible you should take regular exercise, especially weight-bearing exercise. Do not take calcium or vitamin D3 supplements and try to decrease your intake of these in your diet.

Treatment of Hyperparathyroidism
Hyperparathyroidism is a condition in which the parathyroid glands become overactive and secrete too much of parathyroid hormone. This leads to high levels of calcium in our blood, a condition called hypercalcemia. Sodium acid phosphate helps reduce this increased secretion of parathyroid hormone and restores the calcium levels to normal. It helps prevent complications of hypercalcemia such as osteoporosis (a bone disorder), frequent fracture, reduced height, kidney stones etc.

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Addphos

• Nausea
• Diarrhea

Take this medicine in the dose and duration as advised by your doctor. Check the label for directions before use. Empty the granules in a glass of water/milk, stir it and consume immediately. Sodium acid phosphate may be taken with or without food, but it is better to take it at a fixed time.

Sodium acid phosphate works by binding with calcium which makes their level go back to normal.

• Sodium acid phosphate helps treat high calcium level in blood that may have been caused due to an overactive parathyroid gland or some type of cancer.
• Do not take antacids (to reduce the acid level of your stomach) while taking this medicine as they may reduce the efficacy of this medication.
• Your doctor may get regular blood tests to monitor the levels of calcium and phosphate in your blood while you are taking this medicine.
• Avoid other supplements containing calcium while you are taking this medication.
• Inform your doctor if you have a history of kidney or heart disease.

Sodium acid phosphate. Bedford, UK: HK Pharma Ltd.; 1998 [revised Jul. 2015]. [Accessed 04 Apr. 2019] (online) Available from:

PubChem. Sodium acid phosphate. [Accessed 04 Apr. 2019] (online) Available from: