Carprofen Dosage for Dogs

Generic name: Carprofen

🔒 Prescription RequiredNSAID

⚡ QUICK ANSWER

The typical carprofen dosage for dogs is 2.2 mg per kg (1 mg per pound) every 12 hours, or 4.4 mg per kg (2 mg per pound) once daily. For example, a 50 lb dog would receive 50 mg twice daily or 100 mg once daily. Carprofen is a prescription NSAID — always follow your veterinarian's exact instructions.

Carprofen Dosage Calculator for Dogs

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What is Carprofen?

Carprofen is a prescription nonsteroidal anti-inflammatory drug (NSAID) commonly used in dogs to manage pain and inflammation. It is sold under several brand names including Rimadyl, Novox, and Vetprofen. Carprofen is one of the most widely prescribed pain medications in veterinary medicine and is frequently used for arthritis, post-surgical pain, and injuries.

Carprofen works by blocking the enzymes that produce prostaglandins, which are chemicals responsible for inflammation and pain. By reducing prostaglandin production, carprofen reduces both swelling and pain. It is not a steroid, so it does not have the same side effects as corticosteroids, but it still requires careful use and regular monitoring.

Because carprofen is an NSAID, it must be used with care. It should never be given with other NSAIDs or steroids, and it is not appropriate for dogs with liver or kidney disease, bleeding disorders, or certain gastrointestinal conditions. Your veterinarian will typically recommend blood tests before starting carprofen and may repeat them periodically during long-term use.

How Carprofen Works in Dogs

Carprofen is absorbed quickly after being given orally, usually reaching peak levels in the blood within 1 to 3 hours. Its anti-inflammatory and pain-relieving effects last around 12 hours, which is why it is typically dosed twice a day. The medication is processed by the liver and excreted through bile and urine, so dogs with liver or kidney problems may need a different medication or a reduced dose.

Carprofen Dosage Chart by Weight

Typical dose range: 2.2–4.4 mg per kg, Every 12 hours.

Weight (lb)	Weight (kg)	Dose (min)	Dose (max)
5 lb	2.3 kg	5.1 mg	10.1 mg
10 lb	4.5 kg	9.9 mg	19.8 mg
15 lb	6.8 kg	15.0 mg	29.9 mg
20 lb	9.1 kg	20.0 mg	40.0 mg
25 lb	11.3 kg	24.9 mg	49.7 mg
30 lb	13.6 kg	29.9 mg	59.8 mg
40 lb	18.1 kg	39.8 mg	79.6 mg
50 lb	22.7 kg	49.9 mg	99.9 mg
60 lb	27.2 kg	59.8 mg	119.7 mg
75 lb	34 kg	74.8 mg	149.6 mg
100 lb	45.4 kg	99.9 mg	199.8 mg

⚠️ Chart is a general guide. Your veterinarian may prescribe a different dose based on your dog's health, age, and condition.

How Often to Give Carprofen

Carprofen is usually given every 12 hours, though some veterinarians prescribe it once daily at a higher dose for certain conditions. The maximum daily dose depends on your dog's weight and health. Do not increase the dose or frequency without veterinary approval, and never give carprofen on an empty stomach — always give it with food to reduce the risk of stomach upset.

Available Formulations

▸25 mg tablet
▸75 mg tablet
▸100 mg tablet
▸Chewable tablet (flavored)
▸Injectable (used by veterinarians)

Common Uses in Dogs

▸Osteoarthritis and joint pain
▸Post-surgical pain and inflammation
▸Soft tissue injuries
▸Dental pain (short-term)
▸Chronic pain management (with monitoring)

Safe vs. Unsafe Forms of Carprofen

✓ Safe

Veterinary-prescribed carprofen (Rimadyl, Novox, Vetprofen) given at the exact dose and schedule recommended by your veterinarian.

✗ Unsafe

Human NSAIDs such as ibuprofen, naproxen, or aspirin. These are not the same as carprofen and can be highly toxic to dogs.

✗ Unsafe

Combining carprofen with steroids (such as prednisone) or other NSAIDs. This greatly increases the risk of stomach ulcers and kidney damage.

✗ Unsafe

Giving carprofen to dogs with liver disease, kidney disease, bleeding disorders, or stomach ulcers without veterinary approval.

Possible Side Effects

•Vomiting or diarrhea
•Loss of appetite
•Lethargy
•Black or tarry stools (sign of stomach bleeding)
•Liver toxicity (rare, with long-term use)
•Kidney problems (rare)

Important Warnings

⚠Prescription required — never give carprofen without veterinary approval.
⚠Do not combine with other NSAIDs or steroids.
⚠Do not use in dogs with liver or kidney disease, bleeding disorders, or stomach ulcers.
⚠Not for use in pregnant or nursing dogs.
⚠Regular blood tests are recommended during long-term use.

When to Call Your Veterinarian

Contact your veterinarian or an emergency veterinary clinic immediately if any of the following occur:

🚨Your dog shows signs of stomach upset: vomiting, diarrhea, or black/tarry stools.
🚨Your dog loses appetite or becomes unusually lethargic.
🚨You notice yellowing of the gums, eyes, or skin (sign of liver problems).
🚨Your dog's pain does not improve or worsens after starting carprofen.
🚨You accidentally give more than the prescribed dose.
🚨Your dog is on other medications and you are considering adding carprofen.

Frequently Asked Questions

What is the carprofen dosage for dogs?▾

2.2 mg per kg every 12 hours, or 4.4 mg per kg once daily, prescribed by your vet. Do not exceed.

Can I give my dog human carprofen?▾

No. Human formulations may contain different ingredients. Only use veterinary-prescribed carprofen.

How long can my dog take carprofen?▾

Short-term use is common. Long-term use requires regular blood tests to monitor liver and kidney function.

What are the side effects of carprofen in dogs?▾

Vomiting, diarrhea, appetite loss, and rarely liver or kidney problems. Stop and call your vet if you notice these.

Can carprofen be given with gabapentin?▾

Yes, vets sometimes prescribe both for pain, but only under supervision.

Is Rimadyl the same as carprofen?▾

Yes. Rimadyl is a brand name for carprofen. Same active ingredient.

Can carprofen be given on an empty stomach?▾

No. Always give carprofen with food to reduce the risk of stomach upset.

What if I miss a dose of carprofen?▾

Give the missed dose as soon as you remember, unless it is almost time for the next dose. Never double the dose.

Sources

▸U.S. Food and Drug Administration (FDA) — Veterinary Medication Safety
▸Merck Veterinary Manual
▸Plumb's Veterinary Drug Handbook
▸American Veterinary Medical Association (AVMA)

⚠️ Disclaimer

This information is provided for educational purposes only. It is not a substitute for professional veterinary advice. Dosage depends on your dog's weight, age, health condition, and other factors. Always consult a licensed veterinarian before giving any medication to your dog. If you suspect an overdose or a medical emergency, contact your veterinarian or an emergency veterinary clinic immediately.