How bromethalin harms the nervous system
Bromethalin blocks the flow of energy in nerve cells causing swelling of the brain and spinal cord
The toxin is absorbed quickly from the gut and leads to seizures loss of coordination and death if untreated
Even a tiny piece of bait can be lethal because the chemical concentrates in the liver
Why speed matters
Delaying care significantly worsens outcomes. Some signs appear hours or days later, so "looks fine right now" is not a reason to wait.
Signs to watch for
- Repeated vomiting within 1-3 hours after ingestion
- Trembling or shaking of the limbs by the afternoon
- Unsteady gait and stumbling after 4-6 hours
- Dilated pupils and staring eyes by evening
- Seizures or collapsing within 8-12 hours
- Gums look pale or turn grey
What to do right now
- Call your vet or an animal poison control line immediately
- Bring the bait packaging or any remaining pieces for identification
- Do not induce vomiting because the toxin can cause rapid neurological decline
- Rinse the mouth with water and keep the pet calm and warm
- Watch for seizures, loss of coordination or collapse and report them to the vet
If your pet shows any of the signs above, go to the nearest emergency vet now and call ahead.
The step-by-step response, from the first minute to the vet visit, is in our Bromethalin rodenticide poisoning in dogs and cats emergency guide.