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Assessment and treatment

Authoring team

Identify and treat the underlying causes of hypomagnesaemia.

Correct any other electrolyte disturbances. Hypomagnesaemia is often associated with hypocalcaemia and hypokalaemia.

The dose, dosing schedule and duration of treatment will depend on your patient’s serum magnesium level and symptoms.

Lower doses may be required in renal impairment due to the risk of hypermagnesaemia.

In general, in mild hypomagnesaemia then use oral magnesium replacement

  • give intravenous (IV) magnesium sulfate in a hospital setting if the oral route is not available

Seek expert advice.

Treatment:

  • oral magnesium salts - magnesium glycerophosphate least likely to cause diarrhoea
  • parenteral magnesium sulphate

Reference:

  1. NHS Specialist Pharmacy Service (December 2024). Treating acute hypomagnesaemia in adults

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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