Is E621 Vegan? Monosodium Glutamate
E621 (Monosodium Glutamate) is vegan. It is derived from fermentation, with no animal involvement in standard food production.
Why is E621 vegan?
The source of Monosodium Glutamate is fermentation, which is plant-derived, mineral or synthetic — all acceptable for vegans.
Is E621 vegetarian?
E621 is vegetarian.
What should vegans do about E621?
If you're avoiding Monosodium Glutamate, look for products without E621 in the ingredients list.
Affiliate links — we may earn a commission at no extra cost to you.
Helpful for vegan label reading
Resources for vegans checking E-numbers like E621
Vegan Ingredient Guide
Spot hidden animal-derived E-numbers including E621 on any food label.
Vegan Label Reading
Books and pocket cards that decode E-numbers and hidden animal additives in seconds.
Certified Vegan Foods
Products with vegan certification logos — no ingredient-by-ingredient guessing.
E621 vegan FAQs
Is E621 vegan?
E621 is always vegan: fermentation.
Is E621 always non-vegan?
No — E621 is always vegan. It is derived from fermentation in all standard food uses.
How can I tell if E621 is vegan in a specific product?
You don't need to check for E621 specifically — it is always vegan. Look for vegan certification logos if you want a full product-level guarantee.
Other additives to watch for vegans
Data: Open Food Facts (ODbL). Vegan status reflects the most common source — always verify with manufacturer or look for certified vegan labelling.