A dog who abruptly becomes sick after exposure to a medication or toxin may have an acute liver injury. Infection and other illnesses can cause sudden liver abnormalities too. A prompt veterinary workup matters because treatment depends on the cause and some liver conditions can worsen quickly.
Signs that justify immediate contact
Persistent vomiting, refusal to eat, marked tiredness, jaundice, abdominal pain, unusual bleeding or changes in behavior deserve urgent evaluation. Confusion, collapse, seizures and difficulty breathing are emergency signs. Some toxins damage the liver before obvious signs appear, so known or suspected ingestion is a reason to call promptly.
What testing may involve
The veterinarian may review medications and exposures and check liver enzymes, bilirubin, blood sugar and clotting function. Abdominal imaging or additional tests may help find infection, obstruction or other causes. High liver enzymes do not tell the whole story of how well the liver is functioning.
Treatment is cause-specific
Some patients need hospitalization with carefully managed fluids, nausea relief, nutrition and treatment of the underlying cause. Others need specialized interventions. Self-prescribing antibiotics, steroids or supplements may delay necessary care or harm the liver.
Protect other animals and prepare information
If possible, bring packaging for any recently given medication, supplement or potential toxin. Do not induce vomiting unless poison-control or a veterinarian explicitly instructs you. More information is available in warning signs of liver disease.
Veterinary sources
- Merck Veterinary Manual: Liver Disease in Dogs
- American College of Veterinary Internal Medicine: Consensus statements
Education only. A dog with collapse, seizures, severe vomiting or marked jaundice needs urgent veterinary care.
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.