Types and Precautions of NSAID Pain Relievers for Dogs and Cats

ImmunityQ&AMeongsiljang Veterinary Advisory Board

We’ve compiled a guide to the types, side effects, and safe usage of NSAID anti-inflammatory pain relievers prescribed for dogs and cats. You can also learn about the dangers of human painkillers and compare ingredients.

Essential Basics of NSAID Pain Relievers for Pets

A dog and a cat sitting side by side at the veterinary clinic

Nonsteroidal anti-inflammatory drugs (NSAIDs) are pain relievers for pets that help reduce inflammatory pain, such as post-surgical discomfort or arthritis. The most important thing to remember is that these medications must always be prescribed by a veterinarian. Human medications like ibuprofen or acetaminophen (Tylenol) can be fatal to dogs and cats, so never administer them without veterinary guidance. Your vet will carefully evaluate your pet’s weight, overall health, and any current medications to select the safest and most appropriate treatment.

Situations Requiring NSAIDs

NSAIDs are typically prescribed in three main situations.

Post-surgical pain management: They help reduce inflammation and pain immediately after procedures such as spaying or neutering, patellar luxation surgery, and dental treatments. They are often used for several days starting from the day of surgery.

Chronic pain management: They may be prescribed long-term for persistent pain conditions like arthritis, intervertebral disc disease, and degenerative joint disease. In these cases, it is important to have regular blood tests to monitor liver and kidney function.

Fever reduction: They can also be used to lower body temperature when fever occurs due to infection or inflammation.

Main Types of NSAIDs for Pets

This is the most commonly prescribed NSAID ingredient in veterinary clinics.

Meloxicam: Can be prescribed for both dogs and cats. It is widely used for long-term management of arthritis. Various formulations, such as injections and tablets, are available, and for cats, it is essential to strictly follow the formulation and dosage specified by the veterinarian.

Carprofen: Exclusively for dogs. Available as chewable tablets, it can be given like a treat. It is frequently prescribed for pain management after surgery.

Firocoxib: A selective COX-2 inhibitor with relatively fewer gastrointestinal side effects. It is prescribed for arthritis and post-surgical pain in dogs.

Pain relievers prescribed at veterinary clinics, available in syrup and chewable forms

Comparison of Major NSAID Ingredients

Item	Meloxicam	Carprofen	Firocoxib
Target animal	Dogs and cats	Dogs	Dogs
Main use	Arthritis and post-surgical pain	Post-surgical pain and arthritis	Arthritis and after soft tissue surgery
Formulation	Injection, tablet	Chewable tablet, injection	Chewable tablet
Long-term use	Possible (monitoring required)	Possible (monitoring required)	Possible (monitoring required)

Ingredients that can be prescribed long-term for cats are limited. Always consult your veterinarian.

Human Painkillers That Must Never Be Given

Human medications such as ibuprofen, acetaminophen (Tylenol), and naproxen can cause severe poisoning in dogs and cats. Cats, in particular, have very limited ability to metabolize acetaminophen, so even a tiny amount can be life-threatening. If your pet seems unwell, never administer human medication on your own; always contact your veterinarian first.

NSAID Side Effects: Symptoms to Monitor

NSAIDs are highly effective, but they also carry a risk of side effects. According to veterinary pharmacology textbooks, NSAIDs inhibit the production of prostaglandins that protect the gastrointestinal lining, making gastrointestinal side effects the most common.

Gastrointestinal symptoms: Vomiting, diarrhea, loss of appetite, black-colored stool (suspected gastrointestinal bleeding)

Liver-related symptoms: Yellowing of the gums or skin, severe lethargy

Kidney-related symptoms: Changes in urine output, sudden excessive water consumption

If you notice any of these symptoms, stop administering the medication and contact your veterinarian immediately.

A pet owner monitoring their dog's condition at home

Stop Medication Immediately If These Symptoms Appear

If your pet experiences repeated vomiting, black or bloody stools, or a complete loss of appetite while taking NSAIDs, stop the medication immediately and seek veterinary care. Yellowing of the gums or the whites of the eyes may also indicate liver damage. Although you should generally not stop prescribed medications without consulting your vet, these emergency symptoms are an exception.

Points Cat Owners Should Pay Special Attention To

Cats have a much lower capacity for metabolizing medications than dogs, so a dose that is safe for a dog can be toxic to a cat. In particular, even tiny amounts of acetaminophen can be fatal to cats. The NSAID ingredients that can be prescribed long-term for cats are very limited. Meloxicam is the most widely used, but regular monitoring of kidney function is essential when it is used long-term. Your veterinarian will prescribe the lowest effective dose and confirm safety through routine blood tests.

5 Principles for Safe Use of NSAIDs

Veterinary prescription required: Never give human medications to your pet. Always obtain a prescription from a veterinarian.

Adhere strictly to the prescribed dosage: Follow the dosage and frequency determined by your veterinarian exactly. Never administer an extra pill just because your pet appears to be in pain.

Administer as directed by your veterinarian: NSAIDs inhibit the production of prostaglandins, which protect the gastrointestinal mucosa, making gastrointestinal side effects the most commonly reported adverse reactions. Therefore, it is safest to follow your veterinarian’s instructions regarding administration timing and method precisely, and never arbitrarily change the minimum effective dose.

Caution with concurrent medications: Using steroids and NSAIDs simultaneously significantly increases the risk of gastrointestinal bleeding. Always inform your veterinarian of any other medications your pet is taking.

Regular check-ups: For long-term use, have regular blood tests performed according to your veterinarian’s recommended schedule to monitor liver and kidney function.

A veterinarian explaining how to administer medication to a pet owner.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

My dog accidentally ingested human ibuprofen. What should I do?

Visit a veterinary clinic immediately. Let the vet know how much was ingested and when, so they can act quickly. Ibuprofen poisoning can cause serious complications such as gastrointestinal ulcers and acute kidney damage, so it’s crucial to seek veterinary care without delay.

Is it safe to give NSAIDs long-term?

Chronic conditions like arthritis may require long-term medication. However, it is essential to have regular blood tests to monitor liver and kidney function at intervals recommended by your veterinarian. The frequency of these check-ups will be determined by your vet based on your pet's health status.

Can I use steroids and NSAIDs together?

Using them together significantly increases the risk of gastrointestinal bleeding or perforation, so they are generally not prescribed concurrently. It is also standard practice to include a washout period when switching medications.

If you’re concerned about NSAID side effects, are there other options?

There are various options available, such as neuropathic pain relievers like gabapentin, laser therapy, physical therapy, and joint supplements. Consult with your veterinarian to create a pain management plan tailored to your pet's needs.

Is it safe to give meloxicam to cats for an extended period?

Cats have sensitive kidneys, so extra caution is needed when using medications long-term. A veterinarian will prescribe the lowest effective dose and regularly monitor kidney function to ensure safe management.

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References

[1] Handbook of Veterinary Pharmacology, Walter H. Hsu, Wiley-Blackwell

[2] Blackwell's Five-Minute Veterinary Consult Clinical Companion: Small Animal Toxicology, 3rd Edition

[3] Clinical Medicine of the Dog and Cat, 4th Edition, 2013

[4] Advanced Monitoring for Small Animal Emergency and Critical Care, 2nd Edition

[5] Enberg TB, Braun LD, Kuzme AB. Gastrointestinal perforation in five dogs associated with the administration of meloxicam. J Vet Emerg Crit Care 2006;16:34–43