Do You Need To Take Magnesium With Food?

In our latest question and answer, the pharmacist discusses whether or not magnesium supplements should be taken with food.


Can you please tell me if you should take MagMin (magnesium) with food or doesn't it matter?

Asked by Debbie On Feb 20, 2018

Answered by
Medical Content Reviewed By PharmacistAnswers Staff

On Feb 20, 2018

Over the counter magnesium supplements are available in a variety of salt forms including:

  • Magnesium oxide
  • Magnesium citrate
  • Magnesium L-aspartate
  • Magnesium chloride
  • Magnesium gluconate

Magnesium supplements should generally be taken with food to allow for maximum absorption. While they can be taken on an empty stomach, food generally increases the extent of absorption of magnesium products.

It is important to note that all of the different forms of magnesium contain different percentages of elemental magnesium. For example, magnesium oxide contains 60% elemental magnesium by weight while magnesium chloride contains only 12% elemental magnesium by weight.

About the Pharmacist

Dr. Brian Staiger Pharm.D

Dr. Brian Staiger is a licensed pharmacist in New York State and the founder of He graduated from the University At Buffalo with a Doctor of Pharmacy degree in 2010. He has been featured in numerous publications including the Huffington Post as well as a variety of health and pharmacy-related blogs. Please feel free to reach out to him directly if you have any inquiries or want to connect! He's answered thousands of medication and pharmacy-related questions and he's ready to answer yours! Office: 716-389-3076

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