What is a common treatment for hypomagnesemia?

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When magnesium is low, especially if symptoms or severe deficiency are present, the goal is to raise magnesium levels quickly and reliably. Giving magnesium intravenously as magnesium sulfate provides rapid correction and is the standard approach in acute care because it delivers a controlled amount directly into the bloodstream, helping prevent complications like cardiac rhythm problems or seizures.

Oral magnesium can aid recovery, but it works slowly and may not be sufficient in the acute setting. Magnesium-rich foods and oral tablets are useful for long-term maintenance or milder cases, but they don’t replace urgent IV repletion when rapid correction is needed. Diuretic therapy would remove magnesium from the body and would worsen the deficiency, so it isn’t used to treat hypomagnesemia.

In practice, after IV repletion, patients may transition to oral supplements or dietary strategies to maintain levels, with monitoring of kidney function and signs of overcorrection to avoid magnesium excess.