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

    Submit response
« Parent article

Register for free content

The full text of all Editor's Choice articles and summaries of every article are free without registration

The full text of Images in ... articles are free to registered users

Only fellows can access the full text of case reports (apart from Editor's Choice) - become a fellow today, or encourage your institution to, so that together we can grow and develop this resource

Don't forget to sign up for content alerts so you keep up to date with all the case reports as they are published, and let us know what you think by commenting on the Editor's blog