Propylene glycol is a controversial additive used to help preserve the moisture content in some commercial dog foods.
You may already recognize this chemical by its more “infamous” use: as the key component in newer automotive antifreeze.
However, propylene glycol is considerably safer (less toxic) than its far more dangerous cousin — ethylene glycol.
Yet because of its proven ability to cause a serious type of blood disease — Heinz body anemia — propylene glycol has been banned by the FDA for use in cat food.
However, it can still be used to make dog food.
Propylene Glycol in Dog Food
The Bottom Line
No matter how safe propylene glycol may seem, it’s the continuous feeding of this controversial chemical additive to the daily diet of any animal that concerns me.
And if you love your dog as much as I love Bailey and Molly, long term use of any non-nutritive additive should concern you, too.