What to know about Red Dye No. 40 and artificial food coloring used in thousands of food and drink products sold in the U.S.

Is Red 40 any different from Red Dye No. 3? Here's what to know before ... and a rise in Attention Deficit/Hyperactivity Disorder (ADHD) in children. The FDA says "Most children have no adverse ...

"Scientific studies have suggested a potential link between Red Dye 40 and hyperactivity, including ADHD and report noted improvements in behavior and attention when such dyes are eliminated from ...