Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual
No, it is not safe and is a high risk for a kitten. Onion powder is concentrated, and even a small amount can damage a young cat's red blood cells, causing anemia. For a kitten this small, the effects can be severe and rapid. Call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately.
Do not feed · Cats · full breakdown on the linked food page
Concentrated onion, and it hides in stock cubes, gravy and baby food.
The full verdict, portion guidance and serving notes are collected on the Onion powder food facts page.