Why Are Raw Egg Whites Toxic?
Raw egg whites contain a protein called avidin.
Avidin binds to biotin (a B vitamin) in the gut, preventing its absorption.
Chronic consumption can lead to a biotin deficiency, which is essential for skin, coat, and metabolic health.
Cooking the egg denatures avidin, eliminating this risk.
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
- Skin inflammation and rash (dermatitis).
- Brittle, dry coat or hair loss.
- Lethargy and weakness.
- Muscle pain or stiffness.
- In severe cases, neurological symptoms.
What to do right now
- Call your veterinarian or a pet poison helpline immediately for advice.
- Do NOT induce vomiting unless specifically instructed by a professional.
- Bring your pet to the vet for examination if symptoms are present.
- Your vet may recommend a biotin supplement if a deficiency is suspected.
- Prevent future exposure by feeding only cooked eggs.
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 Raw Egg Whites (Avidin) Poisoning emergency guide.