Is Chitosan Vegan?

Result: Unknown · Medium confidence

Chitosan is often shellfish-derived but can be fungal.

Chitosan is often shellfish-derived but can be fungal. Classified Unknown because the label term can cover both vegan and non-vegan sources, or because the processing route is not clear enough from the ingredient name alone. Often shellfish-derived, but fungal versions exist; source confirmation is essential. The source is a specialist processing reference and is useful for fining or processing-aid context, but product-level disclosure may still vary. Keep as needs_review until a human reviewer confirms the source, aliases, and any supplier-specific caveats.