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Supplement × Supplement·a synergy·Moderate evidence

Galactooligosaccharides (GOS) + Probiotics

Synergy Moderate evidence

GOS can feed bifidobacteria and may complement probiotic supplements.

Source citations
1
Pair type
Synergy
Evidence
Moderate
Scope
Supplement × Supplement
Open the interaction checker → Read the methodology
From the database

What the row says.

Every entry follows the same shape: what is happening, the mechanism, and the recommendation.

Substances
Galactooligosaccharides (GOS) and Probiotics
Pair type
Synergy
Evidence
Moderate
Source citations
1
Scope
Supplement × Supplement
Last verified
June 4, 2026
SynergyModerate evidence

What is happening. GOS can feed bifidobacteria and may complement probiotic supplements.

Mechanism. Prebiotic oligosaccharides selectively support bifidobacterial fermentation.

Recommendation. Start low and titrate one product at a time to limit gas.

Stack Score

How it moves the number.

Effect on the composite score

If both Galactooligosaccharides (GOS) and Probiotics are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).

The full algorithm, the clamping rules, and four worked stacks are at /methodology/stack-score.

Sources

Sources, by evidence tier.

Every claim on this page is cited. PMIDs link straight to PubMed.

Reference material

1
  • 1Silk DBA et al. Trans-galactooligosaccharide prebiotic in IBS. Alimentary Pharmacology & Therapeutics. 2009.Needs sourceNo link

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NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.