Vegan

E421 is classified as vegan by the local ingredient taxonomy.

Names you may see on a label

MannitolmannitolMannitoliMannitoliaHexitolManitolMannitD-MannitolBronchitolmannitoloManniteD-(-)-mannitolomanitol만니톨Манітол

How to verify it

Check that the name refers to this exact ingredient and not a similar additive with a different source.