E621: Monosodium glutamate (MSG)
Umami flavor enhancer; high doses may cause "Chinese restaurant syndrome" in sensitive individuals. Verdict: debated
| Code | E621 |
| Name | Monosodium glutamate (MSG) |
| Also known as | monosodium glutamate, monosodium glutamate, MSG, flavor enhancer |
| Group | E600–E699 — flavour enhancers |
| Verdict | debated |
Where you meet it
- chips and snacks
- instant noodles
- bouillon cubes
- sauces
- sausage products
Frequently asked questions
- Is monosodium glutamate harmful?
- Glutamic acid is a common amino acid, naturally found in tomatoes, Parmesan cheese, and soy sauce. EU and Russian regulators consider the additive acceptable. Some individuals report headaches after consuming large amounts, but controlled studies have not shown a consistent link.
- Why is it added almost everywhere?
- It enhances umami flavor and allows for a reduction in the amount of salt and meat in recipes. This makes the product cheaper, not more nutritious.
- Is E621 dangerous?
- On the classification this reference uses, E621 is "debated". Umami flavor enhancer; high doses may cause "Chinese restaurant syndrome" in sensitive individuals. That is a summary of the Russian TR CU 029/2012 list and the EU permitted lists, not medical advice.
- How do I check whether E621 is in a product I have?
- Photograph the barcode or the ingredients panel — the app reads the list and flags every additive it finds. Three checks are free, with no account.
Check a product rather than guess. Photograph the barcode and the app reads the ingredients, decodes every code and marks the ones worth knowing about.
Others in this group: E627 · E631 · E620 · the full table
This reference is for information only and does not replace advice from your doctor.