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Brilliant Blue FCF (Blue 1 / E133)

Artificial Color
Proceed With Caution

Synthetic blue dye used in sports drinks and candy. Linked to mild allergic reactions.

Details

A very common petroleum-derived blue coloring. While mostly poorly absorbed by the gut, high doses can tint stools blue.

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Frequently Asked Questions

Is Blue 1 dangerous?

It is generally safe but heavily criticized by clean-eating advocates.

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