These ingredients are flagged Avoid in the Chowmark database based on FDA regulatory data, NTP carcinogen classifications, and peer-reviewed veterinary nutrition research.
Data note: Our scores pull from public regulatory and manufacturer data — FDA recalls, AAFCO standards, and the Open Pet Food Facts database. Use them as a starting point, not a substitute for your vet's advice.
Chowmark flags the following ingredients as Avoid based on regulatory data and veterinary research: BHA, BHT, propylene glycol, sodium nitrite, Red 40, Yellow 5, corn syrup, carrageenan, garlic powder, and garlic oil.
BHA (butylated hydroxyanisole) is listed as a possible human carcinogen by the National Toxicology Program. While it remains permitted in pet food at low concentrations, many manufacturers have switched to natural alternatives like mixed tocopherols.
Carrageenan is a common thickener in wet cat food. Some research has linked degraded carrageenan to intestinal inflammation. The safety of food-grade carrageenan in cats is still debated among veterinary nutritionists.
Garlic contains thiosulfate compounds that can damage red blood cells in dogs and cats, causing hemolytic anemia. Garlic powder is especially concentrated and dangerous.