E951

E951: Aspartame

Moderate concernFunction: sweetener

What is E951?

E951 (Aspartame) is a sweetener used in processed foods.

What the research says

IARC classified it as possibly carcinogenic to humans (Group 2B) in 2023. JECFA kept the acceptable daily intake at 40 mg per kg. People with phenylketonuria must avoid it.

Regulatory status

European UnionApproved
United StatesApproved

Questions people ask

Is E951 (Aspartame) safe?

IARC classified it as possibly carcinogenic to humans (Group 2B) in 2023. JECFA kept the acceptable daily intake at 40 mg per kg. People with phenylketonuria must avoid it.

Why is E951 added to food?

It is used as a sweetener.

Does E951 make a food ultra-processed?

Yes. Under the NOVA system, cosmetic additives such as E951 mark a food as ultra-processed.

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