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Do Magnesium and Potassium Work Together?
Yes. Magnesium helps move potassium across cell membranes, and severe magnesium deficiency can cause low potassium.[1]
Based on NIH Office of Dietary Supplements — Magnesium fact sheet · Updated October 10, 2026
Severe magnesium deficiency can cause low potassium[1]
Magnesium takes part in moving potassium across cell membranes, and severe magnesium deficiency can itself cause low potassium.
Magnesium helps move potassium across cell membranes.
Source [1]Magnesium: Fact Sheet for Health Professionals. NIH Office of Dietary Supplements. (ods.od.nih.gov)
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- Does Licorice Lower Potassium?Yes. Regular, heavy licorice can lower potassium and raise blood pressure, so it is worth stopping if potassium runs low.
- How Does Potassium Balance Sodium?Potassium may help counter sodium’s effect on blood pressure, so potassium-rich foods are worth having alongside eating less salt.
- Does Alcohol Deplete Magnesium?Magnesium deficiency is common in people with chronic alcoholism.
- Do Vitamin D and Magnesium Work Together?Yes. Low blood magnesium causes resistance to some of vitamin D’s effects, so keep magnesium intake adequate.
- Can You Take Magnesium and Zinc Together?One study found very high zinc supplement doses, 142 mg a day, can interfere with magnesium absorption and magnesium balance.
Sources
- Magnesium: Fact Sheet for Health Professionals. NIH Office of Dietary Supplements. ods.od.nih.gov
This page is general information from the cited sources, not medical advice. If you take prescription medication, are pregnant, or manage a health condition, check supplement changes with a pharmacist or doctor.