Blue 2 (Indigotine)
Medium ConcernAlso known as
blue 2indigotinee132fd&c blue no. 2fd&c blue 2
The concern
Animal studies showed statistically elevated brain tumour rates in male rats. EWG rates it with moderate concern. FDA considers current evidence insufficient to ban.
What to look for on labels
This ingredient may appear under any of the following names or codes on product labels:
- Blue 2 (Indigotine)
- blue 2
- indigotine
- e132
- fd&c blue no. 2
- fd&c blue 2
Data sourced from IARC, FDA, EFSA, WHO and EWG public data. For informational purposes only. This does not constitute medical or legal advice.