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Always animal

Isinglass

Common US / international name: isinglass

Origin
Collagen from swim bladders of fish, traditionally sturgeon.
Where it typically appears
Wine and beer clarifying (fining); rarely listed on the bottle.
Regional note
In the EU, allergens from fining agents may need labeling when residues remain; practices vary by producer and country.
Product groups
Drinks
Source
OIV International Code of Oenological Practices; Open Food Facts ingredients taxonomy (ODbL). As of September 1, 2026