Is Mefenamic Acid Safe for Dogs
Dr. Geoff Carullo, DVM, FPCCP, DPCVSCA
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By Dr. Geoff Carullo, DVM, FPCCP, DPCVSCA
Answer: No.
Mefenamic acid is not safe for dogs and should never be given unless specifically prescribed by a veterinarian — which in practice is extremely rare.
Mefenamic acid is a human non-steroidal anti-inflammatory drug (NSAID) commonly used for pain and menstrual cramps. In dogs, however, it can be highly toxic.
Dogs metabolize NSAIDs very differently from humans. Even a single human dose may result in serious harm, especially in small breeds, senior dogs, dehydrated patients, or those with kidney or liver disease.
In canine patients, mefenamic acid may cause:
One of the most common and dangerous mistakes pet owners make is assuming that human pain relievers are interchangeable with veterinary medications. They are not. Many human NSAIDs — including mefenamic acid — are among the top causes of drug toxicity in dogs.
Dogs should only receive:
Pain is often a symptom of an underlying disease. Masking it with the wrong medication can delay diagnosis and worsen the condition.
Mefenamic acid is unsafe for dogs. Human painkillers should never be used as substitutes for proper veterinary care.
Dr. Geoff Carullo is a Fellow and the current President of the Philippine College of Canine Practitioners.
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