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E640Flavor enhancerLow concern
Glycine
In plain words
The short version
The simplest amino acid — a mild sweetener and umami modulator in Japanese-style seasonings.
Why it's green
It's widely considered safe at the amounts used in food, so we mark it green. The Safety section below has the details.
Safety profile
ADI not specified — considered safe. As the body's most abundant non-essential amino acid, dietary additions are metabolized identically to protein-derived glycine. Pharmacological doses are sometimes used clinically (for sleep, schizophrenia adjuncts) without significant adverse effects.
The detail
Educational information only. Not medical or dietary advice.