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Is Celecoxib Toxic to Cats? Safety Verdict and What to Do

PawAI Lab
5 min read

Learn whether celecoxib poses a toxicity risk to cats, what signs may appear after exposure, and what immediate steps to take if your cat may have been exposed.

Quick Answer

Yes, celecoxib is toxic to cats. Cats are particularly sensitive to NSAIDs due to their limited glucuronidation ability. Even small doses of human NSAIDs can be dangerous. If your cat may have been exposed, contact a veterinarian or animal poison-control service right away, even if no signs are visible yet.

Before using any tool, contact a veterinary professional if your cat may have been exposed.

  • US: ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661)
  • UK: Animal PoisonLine (01202 509000) or your nearest veterinary emergency clinic
  • Canada: ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661)
  • AU: Animal Emergency Centre or your regular vet
  • EU: Contact your nearest veterinary emergency service

TOXICITY CHECKER

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Safety Verdict

Toxic. NSAIDs inhibit cyclooxygenase enzymes, reducing prostaglandin production. In cats, this causes gastrointestinal ulceration, kidney damage, and in severe cases, liver damage. Cats are particularly sensitive because they have limited ability to metabolize these drugs.

Cats are particularly sensitive to NSAIDs due to their limited glucuronidation ability. Even small doses of human NSAIDs can be dangerous. Never give human pain medications to cats without veterinary supervision.

What It Is

Celecoxib (Celebrex) is a COX-2 selective NSAID. While it may have a different side effect profile than traditional NSAIDs, it is still toxic to cats and can cause kidney and gastrointestinal damage.

Why It May Be Harmful

The toxic principle in celecoxib is nsaids (non-steroidal anti-inflammatory drugs). NSAIDs inhibit cyclooxygenase enzymes, reducing prostaglandin production. In cats, this causes gastrointestinal ulceration, kidney damage, and in severe cases, liver damage. Cats are particularly sensitive because they have limited ability to metabolize these drugs.

Signs of toxicity may include:

  • Vomiting (possibly with blood)
  • Diarrhea
  • Lethargy
  • Loss of appetite
  • Increased thirst and urination
  • Abdominal pain
  • Pale gums
  • Weakness

Timeline: Signs may appear within hours to days depending on the drug and dose.

Can be life-threatening. Severe cases can cause kidney failure and GI perforation.

What to Do If Your Cat Eats It

  1. Contact a veterinarian or animal poison-control service immediately.
  2. Remove any remaining substance from your cat's reach.
  3. Do not induce vomiting unless instructed by a veterinarian.
  4. Do not give food, milk, charcoal, or home remedies.
  5. Bring the substance, plant, or packaging for identification.

Information to have ready when you call:

  • Your cat's age, approximate weight, and any health conditions
  • The name or type of celecoxib and the estimated amount consumed
  • When the exposure likely occurred
  • Any current symptoms your cat is showing
  • The product packaging or a photo of the plant if applicable

If you are unsure whether your cat ingested an NSAID, contact a veterinarian. Signs of kidney damage may not appear immediately.

When to Contact a Veterinarian

Contact a veterinarian or animal poison-control service immediately if your cat may have been exposed to celecoxib. Do not wait for symptoms to develop.

Emergency signs that require urgent veterinary attention:

  • Vomiting blood or dark material
  • Extreme lethargy
  • Pale gums
  • Increased thirst with decreased urination
  • Collapse

Non-urgent follow-up: If you are unsure whether your cat ingested an NSAID, contact a veterinarian. Signs of kidney damage may not appear immediately.

FAQ

Can I give my cat ibuprofen or aspirin?

No. Human NSAIDs are toxic to cats and can cause kidney damage and GI ulcers. There are veterinary-approved pain medications specifically designed for cats that are safer alternatives.

How much NSAID is toxic to a cat?

Cats are extremely sensitive to NSAIDs. Even a single human tablet can be dangerous. There is no safe over-the-counter dose for cats without veterinary supervision.

Can NSAID poisoning be treated?

Treatment may include decontamination, IV fluids, GI protectants, kidney monitoring, and supportive care. Prognosis depends on the dose and how quickly treatment begins.

TOXICITY CHECKER

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This tool provides general safety information and does not replace veterinary advice.

Sources

Disclaimer

This article and the PawAI Toxicity Checker tool provide general safety information and do not replace examination, diagnosis, or treatment by a licensed veterinarian. If your cat may have ingested a toxic substance, contact a veterinarian, emergency clinic, or animal poison control immediately.