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Niacinamide [Vitamin B3]
Niacinamide is a form of vitamin B3 used as a dietary supplement and topical ingredient to support skin barrier function and cellular metabolism.
Mineral or nutrientUpdated Feb 21, 2026
Health score+2.0
-5Good5
Water guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Food and supplement guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Risks
Rare skin irritation or sensitization with topical use at high concentrations, gastrointestinal discomfort with excessive oral intake
Benefits
Supports skin barrier function, reduces skin redness, participates in cellular energy metabolism, improves dyslipidemia at therapeutic doses
References
Waters containing Niacinamide [Vitamin B3]
2 matches