Digestoa
Additive · Flavour enhancer

Glutamic acid (E620)

Glutamic acid (E620) is a flavour enhancer that Digestoa flags as moderate risk. Common concerns include headaches/sensitivity in some people.

Digestoa riskModerate risk
TypeFlavour enhancer
Found insavoury snacks, instant noodles, stock cubes and ready meals
ConcernsHeadaches/sensitivity in some people

What is Glutamic acid?

Glutamic acid (E620) is a flavour enhancer — used to boost savoury, umami flavour.

Is Glutamic acid bad for you?

Digestoa flags Glutamic acid as moderate risk. Regulators permit it, but safety reviews and studies have raised concerns including headaches/sensitivity in some people. How often you eat it matters more than a single exposure.

What foods contain Glutamic acid?

Savoury snacks, instant noodles, stock cubes and ready meals.

Digestoa's take

You don't need to panic over a single product that contains Glutamic acid. But it's a useful flag: when you see E620 on a label it often signals a more processed product, and there's usually a cleaner alternative.

Safer swaps

Season with herbs, spices and naturally savoury foods like mushrooms and tomatoes.

Frequently asked questions

Is E620 the same as Glutamic acid?
Yes — E620 is the international additive (E-number) code for Glutamic acid.
Is Glutamic acid bad for you?
Digestoa flags Glutamic acid (E620) as moderate risk. It's permitted in food, but it's associated with concerns such as headaches/sensitivity in some people.
What are the side effects of Glutamic acid?
Reported concerns include: Headaches/sensitivity in some people.
What foods contain Glutamic acid?
Savoury snacks, instant noodles, stock cubes and ready meals.
How can I avoid Glutamic acid?
Check the ingredients list for "Glutamic acid" or "E620", or scan the product with Digestoa to see if it's present before you buy.

Related flavour enhancer additives

Monosodium glutamate (MSG) (E621)Disodium guanylate (E627)Disodium inosinate (E631)Disodium 5-ribonucleotides (E635)

Risk ratings reflect Digestoa's editorial assessment synthesising EFSA/IARC opinions and peer-reviewed research. Informational only — not medical advice.