Is Disodium Inosinate (E631) Vegan?

Vegan status: Not Vegan

E-number: E631

Also known as: IMP, Inosinic acid disodium salt

Source

Traditionally derived from fish (sardines, anchovies) or meat. Some fermentation-derived versions exist but are not standard in commercial food production.

Commonly found in

Instant noodles, crisps/chips, flavored snack foods, bouillon cubes, fast food seasonings. Almost always used together with E627 and MSG.

Vegan alternative: There is no direct flavor substitute. Avoid products listing E631 unless the manufacturer confirms a non-animal source.

Notes

E631 is a flavor enhancer that synergizes with MSG. If a product contains MSG (E621) along with E631 or E635, the flavor is likely boosted with animal-derived nucleotides. Particularly common in Asian snack foods and instant noodles.