Open Food Labels. Search 352 ingredients⌘K

E518

Magnesium sulphate

What the research shows

Prototype

Concerning

in animal and lab studies only

2 of 2 health findings on this page · See the findings

A white salt also known as Epsom salt.

Written from English Wikipedia1

  • Vegan
  • Vegetarian

What research says

Animal and lab studies only

  • Concern

    Stomach cell effects3

    In lab and animal studies, magnesium sulfate affected stomach cells and inflammation, but what this means for people is not yet known.

  • Concern

    Gut and cell effects4

    In lab studies, natural epsomite harmed cells more than pure magnesium sulphate, but what this means for people is unclear.

Study type not stated

  • Open question

    Artery stiffness2

    Scientists do not yet know whether magnesium sulfate affects artery stiffness, blood pressure or gut bacteria in people.

The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least two findings in people. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.

Regulatory status

Checked Sep 2026

Status reflects the named register on the date checked. It is not a safety rating. A country appears here once we've found this ingredient on its official list.

How we check

Products

The 6 most-scanned of 507 products on Open Food Facts that list magnesium sulphate.

  • Pure Life Bluetriton Brands · 500 mL 1 additive
  • Purified Water Dasani · 500 ml 0 additives
  • Zephyrhills Zephyrhills · 500 ml 1 additive
  • Essentia water ionized alkaline bottled water Essentia 2 additives
  • Sam's purified water 0 additives
  • Essentia hydration perfected water Essentia 2 additives

References

  1. 1Magnesium sulfate. Wikipedia. Accessed September 26, 2026.
  2. 2Schutten JC, Joris PJ, Mensink RP, et al. Effects of magnesium citrate, magnesium oxide and magnesium sulfate supplementation on arterial stiffness in healthy overweight individuals: a study protocol for a randomized controlled trial. Trials. 2019;20(1):295. doi:10.1186/s13063-019-3414-4
  3. 3Zhang X, Bo A, Chi B, Xia Y, Su X, Sun J. Magnesium sulfate induced toxicity in vitro in AGS gastric adenocarcinoma cells and in vivo in mouse gastric mucosa. Asian Pac J Cancer Prev. 2015;16(1):71-6. doi:10.7314/apjcp.2015.16.1.71
  4. 4Giordani M, Mirata S, Scarfi S, et al. The cytotoxic/genotoxic role of impurities in soluble minerals: The case of natural (fibrous epsomite) versus synthetic (Epsom salt) magnesium sulphate. Sci Total Environ. 2025;966:178666. doi:10.1016/j.scitotenv.2025.178666