Garlic powder

Dangerous

Verdict

Never — allium powder is concentrated and causes Heinz-body anemia in cats.

Toxic principle: thiosulfate / organosulfur compounds (allium)
Also called: garlic, dehydrated garlic
Source: ASPCA · Verified 2026-08-13

If your cat ate this

Cats hide symptoms — don't wait and see. Even small amounts of certain substances can be fatal to a cat. Act fast.

  1. 1. Call your veterinarian immediately
  2. US — National hotline: ASPCA Animal Poison Control Center (888) 426-4435 aspca.org(24/7, Consultation fee may apply.)
  3. US — National hotline: Pet Poison Helpline (855) 764-7661 petpoisonhelpline.com(24/7, $89 per incident fee; also covers Canada.)
  4. GB — National hotline: Animal PoisonLine 01202 509 000 animalpoisonline.co.uk(24/7, £35 per call (8am–8pm weekdays), £45 at other times.)
  5. AU — National hotline: Animal Poisons Helpline 1300 869 738 animalpoisons.com.au(24/7)
  6. NZ — National hotline: Animal Poisons Helpline 0800 869 738 poisons.co.nz(11am–7pm NZ time (currently being extended), Charges apply.)
  7. CA — National hotline: Pet Poison Helpline (855) 764-7661 petpoisonhelpline.com(24/7, $89 per incident fee.)

Verified 2026-08-06

Verdict

Garlic is more potent than onion by weight, and powder is more concentrated than a fresh clove. It shows up in baby food, broth, and “people food” toppers. Cats are more sensitive to alliums than dogs. Anemia can lag by days.

Symptoms to watch for

  • lethargy
  • pale gums
  • vomiting
  • rapid breathing
  • red-brown urine

What to do

Call a vet. Mention that it was powder — dose estimates change. See also the garlic food page.

ASPCA Animal Poison Control Center: (888) 426-4435 aspca.org