Magnesium hydroxide Side Effects
Some side effects of magnesium hydroxide may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.
For the Consumer
Applies to magnesium hydroxide: oral concentrate, oral suspension, oral tablet chewable
Stop taking magnesium hydroxide 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 be more likely to occur. Continue to take magnesium hydroxide and talk to your doctor if you experience diarrhea or an upset stomach.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
For Healthcare Professionals
Applies to magnesium hydroxide: compounding powder, oral concentrate, oral suspension, oral tablet chewable
Diarrhea may occur and is occasionally severe enough to cause dehydration and electrolyte abnormalities.
Gastrointestinal side effects have included diarrhea and minor gastrointestinal discomfort.
General side effects have included signs and symptoms of hypermagnesemia. These have included hypotension, nausea, vomiting, EKG changes, respiratory depression, mental depression and coma.
Magnesium may be systemically absorbed following administration of magnesium hydroxide. In patients with normal renal function, increased magnesium elimination in the urine occurs and no significant changes in serum magnesium levels would be expected. However, magnesium may accumulate in patients with renal insufficiency.
More magnesium hydroxide resources
- magnesium hydroxide MedFacts Consumer Leaflet (Wolters Kluwer)
- magnesium hydroxide Concise Consumer Information (Cerner Multum)
- Phillips Milk of Magnesia suspension MedFacts Consumer Leaflet (Wolters Kluwer)
- Phillips Milk of Magnesia Advanced Consumer (Micromedex) - Includes Dosage Information
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