Red 40 (Allura Red)
Medium ConcernAlso known as
The concern
One of the "Southampton Six" food dyes. A 2007 Lancet study (McCann et al.) found links to hyperactivity in children. EFSA requires a warning label on products containing it in the EU.
What to look for on labels
This ingredient may appear under any of the following names or codes on product labels:
- Red 40 (Allura Red)
- red 40
- allura red
- e129
- fd&c red no. 40
- fd&c red 40
Commonly found in
Sweets, soft drinks, cereals, ice cream, sauces, confectionery
Other artificial colours to know about
Red 3 (Erythrosine)
HIGHFDA banned Red 3 in food and ingested drugs in January 2025 after studies showed it causes thyroid tumours in male rats.
Yellow 5 (Tartrazine)
MEDIUMSouthampton Six dye linked to hyperactivity in children.
Yellow 6 (Sunset Yellow)
MEDIUMSouthampton Six dye.
Blue 1 (Brilliant Blue)
LOWData sourced from IARC, FDA, EFSA, WHO and EWG public data. For informational purposes only. This does not constitute medical or legal advice.