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Ingredient · Additive

Prebiotics (GOS / FOS)

Cleaner · 7/10, higher is cleaner

How we reached this

Non-digestible oligosaccharides claimed to mimic breast-milk HMOs (human milk oligosaccharides). Modest evidence base; FDA-permitted infant-formula addition. EFSA found no safety concern at typical use levels.

Sources · 1

  • EFSA Opinion on GOS in infant formula (2014)

Also listed as

FOSGOSfructooligosaccharidesgalactooligosaccharides

Products containing this · 1

About this rating

Ratings run 1–10, higher is cleaner, and are set editorially against the sources above — see the methodology page for how an ingredient rating becomes part of a product score. Last reviewed 2026-05-24.