Do Epsom salt baths raise magnesium levels?

Reviewed and edited by Tod Cooperman, M.D.

Initial Posting: 4/21/2018    Last Update: 4/21/2018

Question:
Will an Epsom salt bath increase magnesium levels in my body like a supplement?

Answer:
Epsom salt (magnesium sulfate) added to a bath can raise magnesium levels in the body, according to a preliminary study. Details, including the amount of Epsom salt needed, are found in the Epsom salt section of the Magnesium Supplements Review. Also see the evidence regarding other transdermal methods of obtaining magnesium (e.g., creams, sprays and oils) and our Top Picks among magnesium supplements.

Be aware that it can be dangerous to ingest large amounts of Epsom salt. Learn more about this and other Concerns and Cautions with magnesium supplementation.

Learn more about magnesium supplements:

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Are there drug interactions with magnesium supplements? >>

I've read that magnesium deficiency is rare but also that most people don't get enough magnesium. How can these both be true? >>

Do magnesium creams, sprays and oils help with muscle pain and cramps? How about supplements?  >>

How do I choose the best magnesium supplement?  >>

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