Is propylene glycol used in pet food safe for all animals?
The European authorities have approved propylene glycol USP/EP (pharmaceutical grade) for use in animal feed (“E 490”) for specified animals, such as dairy cows, meat cattle, calves, lambs, pigs, poultry and dogs, with the exception of cat feed. The reason is that high doses of propylene glycol cause a type of anaemia in cats which is not seen in dogs, cattle or humans. Propylene glycol is therefore not used in cat feed.