Propylene Glycol

Propylene Glycol

garage items

Alternate names

Pet-safe antifreeze, PG

Toxicity to pets

Propylene glycol (PG) is one of the least toxic glycols. It is a synthetic liquid substance that absorbs water and is used by the chemical, food, and pharmaceutical industries for a wide variety of reasons. Like ethylene glycol, propylene glycol may be used as an antifreeze and can be found in high concentrations in RV, marine, and “pet safe” antifreeze products. Since it has a wider margin of safety as compared to its chemical cousin, ethylene glycol, it is commonly used to absorb extra water and maintain moisture in certain medicines, cosmetics, or dog and human food products. It is categorized by the FDA as a GRAS (generally recognized as safe) substance. It is also used as a solvent for food colors, flavors and pharmaceuticals (i.e. injectable diazepam). Cats are particularly sensitive to PG and its use is no longer allowed in cat foods.

If cats or dogs ingest large amounts of propylene glycol, poisoning can occur. This is most commonly seen when pets ingest liquid, high concentration propylene glycol products.

Propylene Glycol

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    Toxicity Level

    Mild

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    Cats

    Toxicity Level

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    Disclaimer

    The content of this page is not veterinary advice. A number of factors (amount of substance ingested, size of the animal, allergies, etc.) determine what is toxic to a particular pet. If you think your pet has eaten something potentially toxic, call Pet Poison Helpline or seek immediate veterinary treatment.