Oral Phosphate Supplements; Urinary pH Modifiers/Aluminum; Calcium; Interactions

This information is generalized and not intended as specific medical advice. Consult your healthcare professional before taking or discontinuing any drug or commencing any course of treatment.

Medical warning:

Serious. These medicines may interact and cause very harmful effects. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.

How the interaction occurs:

Medications containing aluminum, calcium, and/or magnesium may bind to phosphate in your digestive system, preventing your body from absorbing the phosphate.

What might happen:

Your phosphate medicine may not work as well.

What you should do about this interaction:

Unless your healthcare professional (e.g. doctor or pharmacist) instructs otherwise, avoid the use of products containing aluminum, calcium, and/or magnesium while you are taking a phosphate supplement or a urinary pH modifier high in phosphate. Your doctor or pharmacist can recommend alternative products.If you have been taking a product containing aluminum, calcium, and/or magnesium with your phosphate medicine, let your healthcare professional know. Your doctor may want to check your phosphate level or the pH of your urine.Your healthcare professionals may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.

  • 1.K-Phos Neutral (phosphorous) US prescribing information. Beach 2002..

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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.