Green 3 (Fast Green FCF)
Medium ConcernAlso known as
The concern
Animal studies found bladder and testes tumours at high doses. Banned in the EU. EWG rates with moderate concern for cancer and data gaps.
What to look for on labels
This ingredient may appear under any of the following names or codes on product labels:
- Green 3 (Fast Green FCF)
- green 3
- fast green
- fast green fcf
- e143
- fd&c green no. 3
- fd&c green 3
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.
Red 40 (Allura Red)
MEDIUMOne of the "Southampton Six" food dyes.
Yellow 5 (Tartrazine)
MEDIUMSouthampton Six dye linked to hyperactivity in children.
Yellow 6 (Sunset Yellow)
MEDIUMData sourced from IARC, FDA, EFSA, WHO and EWG public data. For informational purposes only. This does not constitute medical or legal advice.