Comparison
Ponceau 4R vs Allura Red AC
The short answer
Both are synthetic red azo dyes from the Southampton study, and both carry the EU hyperactivity warning. Red 40 is the US version; Ponceau 4R is banned in US and Canadian food but common in Europe and Asia.| Side by side | Ponceau 4R | Allura Red AC (Red 40) |
|---|---|---|
| Safety score | 32/100 Best to avoid | 35/100 Best to avoid |
| Allowed in the US | No | Yes |
| Allowed in Canada | No | Yes |
| EU warning label | Yes | Yes |
| Daily limit (EFSA) | 0.7 mg/kg | 7 mg/kg ✓ Better |
| California school ban | No (not used in US food) | Yes, from 2028 |
| Safety score | 32 | 35 ✓ Better |
Swapping one for the other
Look for reds from beetroot, paprika, purple carrot or black carrot. Carmine is a stable natural red too, but it's made from insects.
Common questions
Why is Ponceau 4R banned in the US?
It was never approved for food by the FDA, so it can't be used, even though it's legal in the EU.