Pet Food Ingredient
BHT
Synthetic antioxidant preservative, often paired with BHA. Like BHA, it prevents fat rancidity and has an extended effective preservation window compared to natural alternatives.
Also labelled as
Regulatory status
FDA GRAS at permitted levels. AAFCO allows in pet food.
Key notes
- —Long-term rodent feeding studies link high-dose BHT exposure to liver enlargement and tumour development — at doses far exceeding typical pet food concentrations. Evidence of harm at realistic pet-food exposure levels is limited.
- —Often reported alongside BHA; most brands that have removed one have removed both.
Common alternatives
Common questions
Is BHT banned in pet food?
No — BHT remains FDA GRAS at regulated inclusion levels. Long-term rodent feeding studies at high doses show liver enlargement and tumour development, but doses far exceed typical pet-food exposure. EU regulations have restricted some BHT applications in human food; pet food use is still permitted. Most premium brands voluntarily use natural preservatives instead.
Is this ingredient in your pet's food?
Scan the label. If it contains bht or any of the alternative names above, the scanner will flag it against your pet's allergen profile.
Scan a label →This entry is factual reference. It is not medical or veterinary advice. Consult a veterinarian for any decisions about your pet's diet.