← Back to Ingredients
Use cautionAffects catsAffects dogs
Blue 2
Artificial blue dye. High-dose animal studies found correlation with brain tumors. Typically used in tiny amounts, but completely unnecessary in pet food.
Other common names: Indigo Carmine, FD&C Blue No. 2, 食用藍色2號, インジゴカルミン
Want to track this over time? Try Snifflo
Snap a photo of the food/treat label — AI checks it against red/yellow-flagged ingredients before you buy.
Coming soon — app in the works
Sources: ASPCA Animal Poison Control Center, FDA Center for Veterinary Medicine, veterinary literature. For reference only, not medical advice. If poisoning is suspected, seek veterinary care immediately.