As Preservatives And FD&C Red No. 40

FD&C Red No. 40, also known as Allura Red AC, is a synthetic food dye. It is manufactured from petroleum.

This dye is added to foods and beverages to give them a red color. It is commonly found in candies, soft drinks, baked goods, and snack foods.

FD&C Red No. 40 is an FDA-approved color additive for use in food. JECFA has evaluated this additive and set an acceptable daily intake. EFSA has also evaluated it. Some studies have suggested a possible link between synthetic food dyes, including Red 40, and hyperactivity in some sensitive children, though evidence is mixed. The FDA has stated that the available scientific evidence does not show a causal link between these dyes and hyperactivity in the general population. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, including Red 40.