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Fructooligosaccharides
Fructooligosaccharides (FOS) are short-chain oligosaccharides composed of fructose units, classified as prebiotic dietary fibers that resist digestion in the upper gastrointestinal tract and selectively stimulate beneficial gut bacteria.
Mineral or nutrientUpdated Feb 14, 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
Gastrointestinal discomfort such as bloating, gas, and diarrhea at high intake
Benefits
Prebiotic effects supporting gut microbiota, improved bowel regularity, potential immune modulation
References
Waters containing Fructooligosaccharides
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