What are the side effects of Red 40 and Blue 1?

Red 40 and Blue 1, common food color additives, can cause allergic reactions in some individuals, particularly those with sensitivities to artificial dyes. Potential side effects may include hyperactivity in children, headaches, and gastrointestinal issues. Additionally, some studies suggest a possible link between these dyes and behavioral changes, although research is ongoing. It's essential to monitor individual responses to these additives, as reactions can vary.