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Niasin
Niacin (Vitamin B3), a water-soluble vitamin essential for energy metabolism and DNA repair.
Mineral or nutrientUpdated Feb 26, 2026
Health score+4.0
-5Very good5
Water guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Food and supplement guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Risks
Flushing and liver toxicity with excessive supplemental doses
Benefits
Supports energy production, skin health, nervous system function
Waters containing Niasin
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