Is Cats Safe?
Is Aspirin Safe for Cats?
No — Aspirin is toxic to cats.
Aspirin is listed as toxic to cats by Merck Vet Manual; Court 2013. The toxic component is Cats clear salicylates extremely slowly (deficient glucuronidation + poor glycine conjugation; half-life ~37 h), so it accumulates to toxic levels.. Cats metabolise many plant and chemical compounds poorly, so keep Aspirin away from your cat and treat any exposure seriously.
| Category | Medicine |
|---|---|
| Toxic principle | Cats clear salicylates extremely slowly (deficient glucuronidation + poor glycine conjugation; half-life ~37 h), so it accumulates to toxic levels. |
| Also known as | acetylsalicylic acid, asa |
Signs to watch for in cats
- Listlessness
- Loss of appetite
- Vomiting (± blood)
- Fast breathing
- Stomach ulceration
- Liver injury
- Bleeding
- Seizures. Never give without a vet directing it
If your cat may have been exposed to Aspirin:
- Don't wait for symptoms; don't induce vomiting unless a professional tells you to.
- Note what and how much, and take any packaging with you.
- Call your vet or a 24/7 line now — Pet Poison Helpline 855-764-7661 · ASPCA 888-426-4435.
Cat-safe alternatives
Browse all Medicine for cats · or check another item.
Frequently asked questions
Is Aspirin toxic to cats?
Yes. Aspirin is reported toxic to cats by Merck Vet Manual; Court 2013. Keep it away from your cat.
What are the symptoms if a cat is exposed to Aspirin?
Reported signs include: Listlessness, Loss of appetite, Vomiting (± blood), Fast breathing, Stomach ulceration, Liver injury, Bleeding, Seizures. Never give without a vet directing it.
What makes Aspirin toxic to cats?
The harmful component reported for Aspirin is Cats clear salicylates extremely slowly (deficient glucuronidation + poor glycine conjugation; half-life ~37 h), so it accumulates to toxic levels.. Cats metabolise many such compounds poorly, so even small exposures can cause problems.
How much Aspirin is dangerous to cats?
There is no established "safe" amount — sensitivity varies by cat, and small exposures can still cause signs. Treat any exposure as potentially serious rather than waiting to see how much was involved.
What should I do if my cat ate Aspirin?
Contact your vet or a 24/7 animal poison line right away: Pet Poison Helpline (855-764-7661) or ASPCA Animal Poison Control (888-426-4435).