Is This Vegan?

Is E631 Vegan?

Confidence: 55% · Low
May Be Vegan

Check source for Disodium Inosinate

May be vegan, but sourcing or formulation creates uncertainty.

Detailed answer

It may not be vegan. E631 (disodium inosinate) is a flavor enhancer that can be derived from animal tissue or fermentation — source is rarely disclosed.

Is E631 vegan?

Disodium inosinate is often paired with E627 (disodium guanylate) in flavor enhancer blends. It can be produced from meat or fish extracts, or via microbial fermentation. Labels do not typically specify which.

Frequently asked questions

Is E631 in instant noodles vegan?
Seasoning packets often contain E631 with unspecified source. Vegan-labeled products must use plant or microbial sources.

Evidence

Last verified August 2026

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Checked by Is This Vegan? · August 2026

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