---
title: Is Magnesium Safe for Everyone?
description: Supplementing magnesium using the RDA is safe for almost everyone.
---
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# Is Magnesium Safe for Everyone?
The Recommended Daily Allowance (“RDA”) for Magnesium is [310-420 mg per day](https://www.nap.edu/read/5776/chapter/1). Supplementing magnesium using the RDA is safe for almost everyone. However, here are four contraindications for supplementing magnesium:
1. Kidney failure. When someone is on kidney dialysis, there is an inability to clear magnesium.
2. Myasthenia gravis. Intravenous administration could accentuate muscle relaxation and collapse the respiratory muscles.
3. Excessively slow heart rate. Slow heart rates can be made even slower, as magnesium relaxes the heart. Slow heart rates often require an artificial pacemaker. (This contraindication is especially for people who are given IV magnesium.)
4. Bowel obstruction. The main route of elimination of oral magnesium is through the bowel.
As you can see, there are no contraindications for medications or supplements. But please check with your healthcare professionals for advice about supplementing magnesium as part of your wellness plan.
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