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Minerals
Magnesium Sulfate
An inorganic salt commonly used as a dietary supplement and laxative, also found in bath salts for topical use.
Mineral or nutrientUpdated Feb 16, 2026
Health score+2.0
-5Good5
Water guidelines
- Legal limit
- Not specified
- Health guideline
- 350 mg/day
Food and supplement guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Risks
Irritation if ingested in high doses, potential laxative effects, possible skin dryness or irritation with topical use
Benefits
Provides magnesium essential for muscle and nerve function, electrolyte balance, mild laxative effect
References
Waters containing Magnesium Sulfate
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