← Back

Propylene Glycol


Poisonous to: Cats, Dogs

Level of toxicity: Generally mild to moderate, depending on the amount ingested and if ethylene glycol is present

Common signs to watch for:

  • Severe sedation
  • Walking drunk
  • Seizures
  • Tremors
  • Panting
  • Anemia
  • Lethargy

Propylene glycol is a colorless, nearly odorless, thick liquid found throughout the household and garage. It is the main ingredient found in “pet-friendly” automotive antifreeze (Sierra® antifreeze), but is still considered to be poisonous to pets (although less poisonous). It is often used as a solvent, and is found in medications, ice packs, hydraulic oils, etc. When ingested by pets, propylene glycol can result in severe sedation, walking drunk, seizures, tremors, panting, anemia, and lethargy. Unlike ethylene glycol, it does not result in acute kidney failure.

Poison type: Garage Items

Alternate names: Pet-safe antifreeze, PG,