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Phosphorus is a naturally occurring substance that is important in every cell in the body. The majority of phosphorus in the body is found in the bones. The potassium and sodium salt forms of phosphorus are called phosphates.

Potassium phosphate and sodium phosphate is used to acidify the urine and lower the urinary calcium concentration. This may reduce rash and odor caused by ammonium in the urine. Potassium phosphate and sodium phosphate may also increase the antibiotic effect of methenamine (Hiprex, Urex). Potassium phosphate and sodium phosphate is also used as a phosphorus supplement to prevent and/or treat a phosphorus deficiency.

Adult: 15ml bid or as reqd.

Child: 5-10ml in 1 or 2 divided doses.

You cannot take potassium phosphate and sodium phosphate if you have

high levels of potassium in your body,

high levels of phosphorus in your body,

infected phosphate stones, or

severe kidney disease.

Do not take antacids containing aluminum, calcium, or magnesium while taking potassium phosphate and sodium phosphate, except under the supervision of your doctor. Antacids may decrease phosphate absorption.

Before taking potassium phosphate and sodium phosphate, tell your doctor if you are taking any of the following medicines

calcium and/or vitamin D supplements;

potassium supplements or salt substitutes;

a diuretic (water pill) such as triamterene (Dyrenium, Dyazide, Maxzide), spironolactone (Aldactone), or amiloride (Midamor);

a heart medication such as guanethidine (Ismelin), diazoxide (Hyperstat, Proglycem), hydralazine (Apresoline), methyldopa (Aldomet), or reserpine (Ser-Ap-Es); or

a steroid medicine such as corticotropin (ACTH, Acthar), cortisone (Cortone), hydrocortisone (Cortef, others), prednisone (Orasone, Deltasone, others), prednisolone (Prelone, Pediapred, Delta-Cortef, others), methylprednisolone (Medrol, others), triamcinolone (Aristocort, Kenalog, Tri-Kort, Trilog, others), dexamethasone (Decadron), or betamethasone (Celestone).

You may require a dosage adjustment or special monitoring if you are taking any of the medicines listed above.

Drugs other than those listed here may also interact with potassium phosphate and sodium phosphate. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.

Stop taking potassium phosphate and sodium phosphate and seek emergency medical attention if you experience an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives).

Other, less serious side effects may also to occur. Nausea, vomiting, stomach pain, and diarrhea are among the most common. These side effects usually lessen after a few days of therapy. Notify your doctor if you develop these side effects.

If you have kidney stones, there is a possibility that you will pass old stones after starting treatment with potassium phosphate and sodium phosphate.

Less commonly, the following side effects have been reported:

headache;

dizziness or confusion;

weakness or heaviness of the legs;

diarrhea;

seizures;

unusual tiredness or weakness;

muscle cramps;

numbness, tingling, pain, or weakness of the hands or feet;

swelling of the feet or lower legs;

unusual weight gain;

increased thirst;

decreased urine; or

bone or joint pain.

Notify your doctor if you develop any of the side effects listed above.