|
| Causes of hypomagnesaemia | Causes of hypermagnesaemia |
| Non-drug causes | Inadequate Mg2+ intake | Excessive intake |
|
| High Ca2+ intake | Renal failure |
|
| Malabsorption states | Hypothyroidism |
|
| Gastrointestinal losses, e.g. diarrhoea, vomiting | Excessive tissue breakdown, e.g. sepsis, shock, burns |
|
| Polyuria |
|
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| Parathyroid dysregulation |
|
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| Bowel resection |
|
| Drug causes | Diuretics | Lithium |
|
| Laxatives | Mg2+ containing antacids (excessive intake) |
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| Nephrotoxic drugs | Magnesium containing laxatives |
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| Insulin |
|