Amaranth (E 123)

Last reviewed October 19, 2026

In plain words: Amaranth (E 123 / INS 123) is a synthetic red azo food color. It is not the same thing as amaranth grain.

Identity

Amaranth. Number: E 123 / INS 123. Function: color (red, synthetic azo). What it is: a synthetic azo dye; not amaranth grain.

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This page is for general education. It is not medical advice and does not replace advice from your doctor, pediatrician, allergist or registered dietitian. Research changes; we review these pages when new evidence or rules come out. Last reviewed October 19, 2026.