Cambridgeshire and Peterborough
Formulary
 
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9 Nutrition and blood
09-05-01-03 Magnesium




Magnesium Aspartate Magnaspartate®
Formulary

  • Primary care: first line formulary choice

  • Contain 10mmol magnesium per sachet

  • NWAFT - non formulary 

  • CUHFT: Not recommended for use in paediatrics as too large a vol. for dissolution– this is consistent  with other Children's hospitals practice. See magnesium glycerosphosphate tablets.


 


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Magnesium oxide
Formulary

  • CUHFT only


    • Hypomagnesia

    • 500mg = 21 mmol/mg per tablet. (unlicensed special)


  • Non formulary at all other trusts


 


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Magnesium Glycerophosphate
Formulary

 



  • CUHFT: Magnesium glycerophosphate chewable tablets (licensed) are first-line oral magnesium replacement in paeds and liquid (unlicensed) reserved for paeds who cannot chew

  • Contains 4mmol magnesium per tablet.


 

Link  NICE: Evidence Summary: Magnesium glycerophosphate
 

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Magnesium Lactate  Mag-Tab SR
Restricted

  • CUHFT only - Chronic muscle wasting.

  • Non formulary at all other trusts


Restricted Drug Red Hospital View adult BNF  View SPC online  View childrens BNF
Magnesium Sulphate
Formulary

Injection 20% (1mL = approx 0.8mmol Mg) Injection 50% (1mL = approx 2mmol Mg)







    • See local hypomagnesaemia guidance below



 

Link  CUH Hypomagnesaemia
Link  CUH Severe pre-eclampsia
Link  MHRA Drug Safety Update May 2019: Magnesium sulfate - risk of skeletal adverse effects in the neonate following prolonged or repeated use in pregnancy
Link  UKMI Q&A: Can magnesium sulphate be given subcutaneously?
Link  UKMI Q&A: Magnesium sulphate injection: converting between millimoles, milligrams and percentage w/v.
 

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Magnesium Hydroxide Mixture BP
Non Formulary
  • Contains 14 mmol magnesium in 10ml
  • Restricted to use as an option if patients are unable to take tablets for magnesium replacement
  • Non-formulary for treatment of constipation

  • Non Formulary