Why Vitamin A Can Be Toxic
Vitamin A is fat‑soluble and accumulates in the liver with repeated excess
Toxic levels can cause bone abnormalities, skin lesions and liver failure
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
- Loss of appetite
- Vomiting or diarrhea
- Lethargy and weakness
- Joint pain or stiffness
- Yellowish skin or eyes
What to do right now
- Call your veterinarian or an emergency poison line immediately
- If the supplement was ingested within two hours you may induce vomiting under veterinary advice
- Provide plenty of fresh water and avoid additional vitamin A sources
- Veterinarian may administer IV fluids and liver‑protective medications
- Monitor closely and follow up with your vet for blood work
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 Vitamin A Toxicity in Dogs and Cats emergency guide.