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The Truth About Rimadyl Side Effects
Dangerous & Deadly...

A Review of Signs of a Potentially Life-Threatening Reaction to Rimadyl

  • loss of appetite
  • refusal to drink
  • unusual pattern of urination, blood in the urine, sweet-smelling urine, an overabundance of urine, urine accidents in the house
  • vomiting
  • diarrhea
  • black, tarry stools or flecks of blood in the vomit
  • lethargy, drowsiness, hyperactivity, restlessness, aggressiveness
  • staggering, stumbling, weakness or partial paralysis, full paralysis, seizures, dizziness, loss of balance
  • jaundice (yellowing of the skin, mucus membranes and whites of the eyes)

Ten Steps to Take If You Suspect Your Dog Has Had an Adverse Reaction to Rimadyl

  1. If any of the above symptoms appear, immediately stop the drug and take your dog to the vet. The earlier your dog gets appropriate treatment, the better the chances of complete recovery.
  2. Have the vet do a blood panel and CBC (complete blood count). This will help your vet to determine the supportive therapy your dog needs.
  3. If your dog seems seriously ill, and you cannot get an immediate appointment with your vet, go to the nearest emergency veterinary clinic. Explain that you believe your dog is having a reaction that is typical of a dog taking a nonsteroidal anti-inflammatory drug (NSAID). If the clinic staff is unfamiliar with the potential side effects of an NSAID like Rimadyl, have them refer to the Rimadyl product description or package insert.
  4. Call and have your veterinarian call Pfizer. The Pfizer staff veterinarians should be able to offer guidance to your veterinarian for the necessary tests and therapy your dog may need: Pfizer: 1-800-366-5288
  5. If you have caught your dog's potential adverse reaction to Rimadyl in time, it is unlikely that the outcome will be fatal. Don't panic! However, whenever it becomes necessary to establish whether Rimadyl was a factor in a dog's death, a necropsy must be performed. The necropsy does NOT have to be done by a veterinarian appointed by Pfizer; it should, in fact, be done by an impartial third party. However, Pfizer should be advised promptly that the necropsy is being undertaken and that they will be entitled to some, but not all, of the tissue samples obtained.
  6. Try to maintain a diary of the events leading up to your dog's suspected adverse drug reaction. Make it as detailed as possible. Also obtain all medical records from all sources. Your diary and these records will be invaluable, should you decide to apply to Pfizer for reimbursement of veterinary medical expenses.
  7. Call and have your veterinarian call the FDA's Center for Veterinary Medicine to report the incident. Report to the FDA either by telephone at: 1-888-332-8387 (or 1-888-FDA-VETS) or: You may also report an adverse drug experience using a form that is available on the FDA website. Access to the form is at Just print out the form, complete it and mail it. It is two-sided and postpaid.
  8. The distress of dealing with your dog's illness may make it difficult for you to attend to the practical matters of reports, procedures, and bureaucratic requirements. If you feel you need assistance or guidance, please E-mail
  9. You may wish to join the class action lawsuit currently being pursued against Pfizer.
  10. You may also wish to join two E-mail lists that focus on healthcare for dogs: just email to subscribe and also join The Pet Arthritis Chronicle

Read the real experiences of the owners of pets on Rimadyl

Article provided by The Senior Dogs Project

Note: If your pet is suffering from arthritis or hip dysplasia, we highly recommend using a high quality liquid glucosamine formula. For more information on our recommended glucosamine product, click here.

Read the Consumer's Guide to Glucosamine Products for Pets

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Featured Resources
1. Arthritis in Dogs and Cats
2. Guide to Glucosamine Products for Pets
3. Canine Hip Dysplasia
4. The Scoop on Rimadyl
5. Arthritis in Pets
6. Recommended Books about Arthritis in Pets
7. Easing Arthritis Pain in Pets with Glucosamine
8. The Pet Arthritis Chronicle
9. Liquid Glucosamine Formula Syn-flex® for Arthritis in Dogs & Cats
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