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Drug Info

  • Drug Name: Rimadyl
  • Common Name: Rimadyl®, Novox®
  • Drug Type: Non-steroidal anti-inflammatory drug (NSAID)
  • Used For: Inflammation, Pain
  • Species: Dogs
  • Administered: 25 mg, 75 mg, and 100 mg caplets or chewables, Injectable
  • How Dispensed: Prescription only
  • FDA Approved: Yes

General Description

Carprofen is a Non-Steroidal Anti-Inflammatory drug (NSAID) which may be used for the treatment of inflammation in pets. It is typically prescribed to treat arthritis and hip dysplasia. Carprofen is often given to dogs for post-operative pain and inflammation. It is generally not recommended for use in cats, as other NSAIDs have been more extensively studied.

How It Works

NSAIDs work by reducing the enzyme COX-2. COX-2 is involved in the formation of prostaglandins which cause swelling and inflammation. Reduction of these factors reduce the pain and inflammation your pet experiences.

Storage Information

Store in a tightly sealed container. Read the storage instructions on the drug label as some forms may need to be refrigerated.

Missed Dose?

If you miss a dose, give the dose as soon as possible. If it is almost time for the next dose, skip the missed dose, and continue with the regular schedule. Do not give your pet two doses at once.

Side Effects and Drug Reactions

Carprofen may result in these side effects:

  • Loss of Appetite
  • Black, tarry stools
  • Vomiting
  • Abdominal pain
  • Dehydration
  • Diarrhea
  • Liver damage
  • Kidney damage
  • Ulceration of the digestive tract
  • Aggression

Carprofen may react with these drugs:

  • Digoxin
  • Furosemide
  • Methotrexate
  • Diuretics
  • Corticosteroids
  • Other NSAIDs
  • Other drugs that may cause ulceration of the digestive tract

USE EXTREME CAUTION WHEN ADMINISTERING THIS DRUG TO CATS - Use with extreme caution and only with the recommendation of an experienced veterinarian. Rimadyl® is not labeled for use in cats and has not been extensively researched.


Use of Carprofen in animals under 6 weeks, pregnant, or lactating pets has not been extensively researched.

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