Scientific name


Alternate names

muscle relaxant, Kemstro, Lioresal, Gablofen Ozobax

Toxicity to pets

Baclofen is a human medication used as a skeletal muscle relaxant. It is commonly used for patients with MS, diseases of the spinal cord, Parkinson’s disease, and Huntington’s chorea. When ingested in dogs and cats, it can be deadly, as it has a narrow margin of safety – that means a small amount of the drug results in severe poisoning! Immediate veterinary attention is necessary and may include decontamination, IV fluids, intravenous lipid emulsion (an antidote for fat-soluble poisons), a mechanical ventilator (in severe cases), anti-seizure medications, and aggressive symptomatic and supportive care.

If you think your dog or cat accidentally ingested baclofen, call your veterinarian or Pet Poison Helpline® immediately for life-saving treatment advice!

Common Signs to Watch For: 

  • abnormal vocalization
  • walking drunk (ataxia)
  • severe sedation, agitation
  • slow heart rate
  • low blood pressure
  • tremors, seizures
  • difficulty breathing (respiratory depression)

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Toxicity Level

Moderate to Severe

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Toxicity Level



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.