E640 · INS 640Sometimes animal

Glycine

Common US / international name: glycine

Origin: Amino acid used as flavor modifier and nutrient.
What it depends on: Can be synthesized or obtained from hydrolyzed animal proteins or gelatin.
Where it typically appears: Some drinks, seasonings, supplements.
Product groups: Drinks, Other
Source: EU Reg. No 1333/2008 Annex II; Codex CAC/GL 36-1989; Open Food Facts additives taxonomy (ODbL). As of September 1, 2026