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  1. Mg dose with 3 TBSP Epsom Salts is over 4000 mg -- Way too HIGH

    It is important to consider the very high dose of elemental magnesium (Mg) in this case of severe livery injury due to Epsom salt intake (1).

    Using information from the Epsom Salt Council that Epsom Salts is 10% elemental Mg by weight, and that one pound of Epsom Salts = 32 Tbsp, I calculate that 3 Tbsp. Epsom Salts would deliver 4,250 mg elemental Mg.

    This amount of supplemental Mg is definitely excessive for only one day let alone as a daily dose for 15 days.

    The adult male RDA for Mg is 420 mg/day, one tenth of the daily dose given in this case study (2). It is amazing that drug withdrawal and adequate hydration were enough for an uneventful recovery with normalization of liver function test after 38 days, showing how safe oral Mg supplementation can be. However, even though quite safe, such excessive doses (> 1,000 mg Mg/day) of this essential nutrient should be avoided.

    References 1. Philips CA, Paramaguru R, Mahadevan P, et al. Severe liver injury due to Epsom salt naturopathy. BMJ Case Rep 2017;2017 doi: 10.1136/bcr-2017- 221718 [published Online First: 2017/10/04] 2. Institute of Medicine. Dietary reference intakes for calcium, phosphorus, magnesium, vitamin D, and fluoride. Washington, D.C.: National Academy Press 1997.

    Conflict of Interest:

    None declared

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