Permitted Synthetic Food Colour (127) is a food additive in the form of a synthetic food coloring agent. It is a cherry-pink food color which is highly water soluble. Erythrosine is commonly used in sweets such as some candies and popsicles, and even more widely used in cake-decorating gels. It is also used to color pistachio shells.
Look for the "use-by" date on the packaging of Permitted Synthetic Food Colour (127).
E127 has been known to promote hyperactivity, although this is considered rare. Due to E127's iodine content, high concentrations of it may interfere with an individual's iodine metabolism. (1)
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