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Tolfenamic Acid

Prescription
NSAID (Fenamate Class)
Last reviewed 21 Apr 2026 · PetCare.AI Editorial Team
Species
Dog, Cat
Brands
2 available
Interactions
2 documented
Formulations
2

Mechanism of action

Non-selective COX-1 and COX-2 inhibitor with anti-inflammatory, analgesic, and antipyretic properties. Additionally inhibits prostaglandin receptor binding beyond simple synthesis inhibition.

At a glance

Class
NSAID (Fenamate Class)
Schedule
Prescription
Storage
Store at room temperature below 25°C, protect from moisture

Dosing

🐕

Dog

Short course NSAID for pain and inflammation
Dose
4 mg/kg
Route
PO, SQ
Frequency
q24h x 3–5 days
🐈

Cat

One of the licensed NSAIDs for short-term pain management in cats in Europe
Dose
4 mg/kg
Route
PO, SQ
Frequency
q24h x 3 days
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet. Find a vet near you →

Formulations

💊

Other — 2

Strength
Strength

Storage

Store at room temperature below 25°C, protect from moisture

Safety

Monitoring parameters

Renal functionGI signsHepatic enzymes with repeated courses
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet. Find a vet near you →

Interactions

Contraindicated — 1

Meloxicam
contraindicated
Two NSAIDs: synergistic GI and renal toxicity.
Management: NEVER combine. Allow 5-7 day washout.

Major — 1

Prednisolone
major
NSAID + corticosteroid: additive GI ulceration risk.
Management: Do not combine. Allow 3-5 day washout when switching.
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet. Find a vet near you →

Brands

Other markets

Tolfedine
Clotam

FAQs

Frequently asked questions

What is Tolfenamic Acid?
Tolfenamic Acid is a nsaid (fenamate class) used in pets. Non-selective COX-1 and COX-2 inhibitor with anti-inflammatory, analgesic, and antipyretic properties. Additionally inhibits prostaglandin receptor binding beyond simple synthesis inhibition.
What is Tolfenamic Acid used for in pets?
Tolfenamic Acid is used in veterinary medicine for: Short course NSAID for pain and inflammation; One of the licensed NSAIDs for short-term pain management in cats in Europe.
What is the Tolfenamic Acid dose for dogs?
For dogs, Tolfenamic Acid is typically dosed as follows — Short course NSAID for pain and inflammation: 4 mg/kg PO/SQ q24h x 3–5 days. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
What is the Tolfenamic Acid dose for cats?
For cats, Tolfenamic Acid is typically dosed as follows — One of the licensed NSAIDs for short-term pain management in cats in Europe: 4 mg/kg PO/SQ q24h x 3 days. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
Does Tolfenamic Acid need a prescription?
Yes. Tolfenamic Acid is a prescription medication and should only be administered under veterinary supervision.
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet. Find a vet near you →

References

References

The PetCare.AI drug reference is built from 13 authoritative sources cited across 580 drug monographs.

Textbooks & handbooks — 5

  • Plumb's Veterinary Drug Handbook
  • Withrow & MacEwen's Small Animal Clinical Oncology
  • Merck Veterinary Manual
  • NRC Nutrient Requirements of Dogs and Cats
  • Veterinary Pharmacology and Therapeutics (Riviere & Papich)

Clinical guidelines & consensus — 4

  • ASPCA Animal Poison Control Center Guidelines
  • AAHA Diabetes Management Guidelines
  • ASPCA Poison Control Guidelines
  • RECOVER CPR Guidelines

Journals & peer-reviewed studies — 2

  • EPIC Study (J Vet Intern Med 2016)
  • JVIM FAT CAT Study

Regulatory & approvals — 1

  • CDSCO Veterinary Drug Approval Registry (1969–2026)

Databases — 1

  • Washington State University VCPL MDR1 Database

Related medicines

Other medicines in the same class (NSAID).

Ketorolac
Rx
Non-selective COX-1 and COX-2 inhibitor that decreases prostaglandin synthesis. Potent analgesic with anti-inflammatory and antipyretic properties. Parenteral formulation used for perioperative analgesia.
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Phenylbutazone
Rx
Non-selective COX-1 and COX-2 inhibitor with potent anti-inflammatory, analgesic, and antipyretic properties. One of the most potent veterinary NSAIDs but with significant toxicity concerns — primarily used in horses; limited use in dogs.
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