Fiber
GOS (Galactooligosaccharides)
Also known as: Bimuno, Galacto-oligosaccharides, Galactooligosaccharides
Prebiotic fiber similar to human milk oligosaccharides. Supports infant and adult gut health.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Primary uses
- Prebiotic
- Gut health
- Immune support
How it works
- Feeds bifidobacteria
- Similar structure to breast milk oligosaccharides
- Supports gut barrier
Dosage
- Typical range
- 2.5-5 g daily
- Timing
- Any time
- With food
- Optional
- Duration
- Safe long-term
- Special populations
- May help lactose intolerance
Forms
- Powder
- Capsules
Safety
Common side effects
- Gas
- Bloating
Contraindications
- SIBO
Evidence notes
Similar to breast milk prebiotics
Grade B: Some human trials support key claims; further confirmation needed.
Related in Fiber
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.