Pictured: Bromethalin

Poisonous to: Cats, Dogs

Level of toxicity: Generally moderate to severe, depending on the amount ingested, time of ingestion, active ingredient, and concentration of the product

Common signs to watch for:

  • Lethargy
  • Walking drunk
  • Abnormal pupil size
  • Decreased consciousness
  • Tremors
  • Seizures
  • Death

This type of mouse and rat poison causes swelling of the brain. Because the ingredient name looks similar to many of the long-acting anticoagulant (LAAC) mouse and rat poisons, it can easily be mistaken for a LAAC. Bromethalin poisoning is not treated with Vitamin K1! Bromethalin works by uncoupling oxidative phosphorylation in the brain and liver mitochondria and can result in brain swelling (cerebral edema). Common signs of poisoning include incoordination (ataxia), tremors, seizures, paralysis, and eventually death. Unfortunately, this type of mouse and rat poison does not have an antidote, and this poison can potentially have long-lasting effects. Treatment includes decontamination, IV fluids, and specific drugs to decrease brain swelling. With bromethalin, cats are more sensitive than dogs. As this type of mouse and rat poison has a narrow margin of safety, prompt therapy is often needed in all species.

Poison type: garage_items

Alternate names: Fastrac, Terminantor