Is FOS safe to take daily?

FOS is rated "Generally Safe" based on clinical evidence. Always consult your healthcare provider before starting any supplement.

Ingredient Research

Graded against 173,636 supplements + 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, NIH DSLD

FOS

MODERATE EVIDENCESupplementLast updated

AVELOR SUMMARY

FOS are short-chain fructose polymers (2-10 units) that selectively feed Bifidobacterium. Found in chicory root, garlic, onion, asparagus. Dose: 5-10g/day increases Bifidobacterium 5-10x within 2 weeks. More selective than inulin (which FOS is a subset of). GI tolerance: start at 3g/day — gas/bloating common initially. Synergy with calcium (FOS increases calcium absorption by 20% via SCFA-mediated pH reduction in colon). --- *Reviewed by the Dose AI Research Team and Clinical Advisory Board* *Last updated: 2026-04-06*

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Independently graded against 173,636 indexed supplements with 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, and NIH DSLD | Last updated:

Not medical advice. Based on published clinical research and systematic reviews.

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