Indigo Carmine
Also listed as E132, FD&C Blue No. 2, and Indigotine.
This is what the ingredient is.
Indigo Carmine (E132, FD&C Blue 2) is a synthetic indigoid dye providing blue color derived from indigo.
Here is why it shows up on the label.
Used in confections, beverages, and ice cream. Also used in medical diagnostics.
Here is what food agencies say.
The FDA has approved it. Europe sets a suggested daily limit of about five milligrams per kilogram of body weight. Permitted with specifications.
Here is what research has found.
One of the oldest synthetic dyes. Low absorption from GI tract. Safety established through long use history.
Here are a few things worth knowing.
Generally safe. May cause nausea at very high doses. Used safely in medical procedures.
Sources
- FDA Color Additive Status
- EFSA Scientific Opinion
- JECFA Monograph
How to read this page
We publish plain facts about this ingredient so a label is easier to read. This is not medical advice, and it is not a recommendation to buy, avoid, or use anything. For a personal health question, talk with a clinician who knows your history.