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Flavour enhancer

E640 (glycine and its sodium salt): what it is, its sources, vegan or not

E640 can come from a lab or animal collagen, and the pack rarely says which. Vegetarian and vegan profiles get Heads up: source not stated.

By Bravoora teamUpdated 13 October 2026Sources checked 20 September 20264 sourcesHow we check

Heads up

for a vegan profile

E640=source not stated

What is E640?

E640 (glycine and its sodium salt) is a flavour enhancer, an additive that brings out the taste or smell a food already has.

What is E640 made from?

E640 can come from a lab or animal collagen. Usually made in a lab, but it can come from animal collagen.

Made in a lab
Animal collagenRead the gelatin guide

Is E640 vegan?

Heads up. Source not stated. E640 can come from a lab or animal collagen. The pack does not have to say which, so the app says Heads up instead of guessing.

What the app says to each profile, and the reason it shows.

VeganHeads upSource not stated. E640 can come from a lab or animal collagen. The pack does not have to say which, so the app says Heads up instead of guessing.

VegetarianHeads upSource not stated. E640 can come from a lab or animal collagen. One of those is meat, fish or a slaughter by-product, and the pack does not have to say which.

What other names does E640 have on a label?

On a label, E640 can also appear as “INS 640”, “Flavour enhancer (640)”, “Flavour enhancer (E640)”, “Glycine and its sodium salt” or “Glycine”.

Any of these on a pack means E640. The checker reads them all.

E640E 640E-640INS 640Flavour enhancer (640)Flavour enhancer (E640)Glycine and its sodium saltGlycine

What would change the answer for E640?

For E640, a stated source changes the answer. A pack that names the source gives Fits you; one that says “from animal collagen” gives Not for you. A list that is cut off or unreadable gets Needs one more scan.