What is Deramaxx?

Deramaxx is a pain-reliever developed for dogs by Novartis Animal Health Products. It is referred to as a non-steroidal anti-inflammatory drug (NSAID). Although it may provide relief for some dogs, it has also been connected with serious adverse reactions and has been linked to side effects that include (but are not limited to) vomiting, anorexia, depression/lethargy, weakness, anemia and in more extreme cases, death. For a more detailed list of side effects, please visit:

For an FDA chronology check out: Dog Owner Continue To Cite Problems With Deramaxx -
I-Team: Potential Deadly Danger For Pets -
Vioxx Debate Echoed in Battle Over Dog Drugs - Washington Post
Even painkillers for dogs have serious risks - USA Today

How much is enough?

Your companion animal is not capable of clearly communicating to you how much medicine is enough. With fast metabolizers, the administered dosage should clear the system in a reasonable timeframe, whereas with a slower metabolizer, the drug, Deramaxx in this case, may take excessive time, far beyond what is expected to clear. This can bring the concentration up to toxic levels and upon administration of the next dosage, send Deramaxx to an even higher level of concentration.

Be informed, make sure your vet is informed about Deramaxx

Veterinarians and companion animal owners should be informed in advance of the potential side effects and adverse reactions of Deramaxx . If your dog has liver or problems, avoid Deramaxx at all cost, regardless of whether the animal is a fast or slow metabolizer. If you are a new companion animal owner and have not yet selected a vet, ask how he/she treats pain. Try to get a feel for whether your future vet is knowledgeable about Deramaxx , Rimadyl and some of the other drugs which have warranted undesirable publicity.

If you have had a dog treated by a vet who prescribed Deramaxx , think back to how the interaction went. Did the veterinarian communicate to you the risk information and/or provide for you a fact sheet concerning the drug? Another thing which can happen to further confuse the situation is repackaging Deramaxx , Rimadyl, or other drugs into smaller vials. Be aware that many drugs such have generic names as well (carprofen for Rimadyl).

Bea's Beat

Blog with CAPS Spokesmodel Beatrice, a puppy mill survivor and vegan advocate.

Blog with Beatrice!

Deborah Howard

Deborah Howard

Learn more about Deborah Howard, president and founder of Companion Animal Protection Society.

Meet Deborah


Keep up-to-date about CAPS and read about issues affecting companion animals, especially those suffering in pet shops and puppy mills.

Visit CAPS Blog

Contact Us

Contact CAPS

Companion Animal Protection Society (CAPS)
759 CJC Hwy., #332
Cohasset, MA 02025
p: 339-309-0272
501 (c)(3) Tax ID#: 58-2040413

Contact by Webform

Class Action Lawsuits

scales of justice

If you purchased a sick or dying puppy from Barkworks or Happiness is Pets, you may be able to join consumer class action lawsuits. The first step is to fill out the CAPS complaint form.

Read more about Happiness is Pets or Barkworks.

CAPS Complaint Form