Selected Cephalosporins/Aluminum and Magnesium Compounds 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:

Moderate. These medicines may cause some risk when taken together. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.

How the interaction occurs:

Antacids that contain aluminum and/or magnesium may bind to some cephalosporins in your stomach and intestines and prevent your body from absorbing them.

What might happen:

The amount of antibiotic in your blood may decrease and it may not work as well against your infection.

What you should do about this interaction:

If you have to take an antacid containing aluminum and/or magnesium, make sure that you take it at least 2 hours before or after your antibiotic. Let your healthcare professional (e.g. doctor or pharmacist) know if your infection does not seem to be getting better.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.

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