Managing pain and inflammation is part of everyday veterinary practice. Whether it’s arthritis in older dogs or recovery after surgery, medications like NSAIDs (non-steroidal anti-inflammatory drugs) are often prescribed. Three of the most common in the Philippines are:
- Rimadyl® (carprofen)
- Metacam® (meloxicam)
- Previcox® (firocoxib)
On their own, these drugs are generally safe when prescribed correctly. But when combined with corticosteroids such as prednisone, prednisolone, or dexamethasone, the risk of serious harm skyrockets.
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Why Combining NSAIDs and Steroids Is Dangerous
Both NSAIDs and steroids work by reducing inflammation. However, they also block protective prostaglandins, which are essential for:
- Shielding the stomach lining from acid
- Maintaining healthy kidney blood flow
- Supporting liver function
When both drug classes are given at the same time, these protective mechanisms are severely compromised. The result can be devastating:
- Stomach ulcers and internal bleeding
- Acute kidney injury or failure
- Liver damage
- Gastrointestinal perforation (life-threatening)
Clinical Evidence
Veterinary studies confirm that combining NSAIDs and steroids dramatically increases GI ulcer and perforation risks.
Even when given alone, Rimadyl®, Metacam®, and Previcox® can cause side effects if overdosed, given to sensitive patients, or used without monitoring.
The FDA, AVMA, and veterinary pain specialists all strongly caution against simultaneous use.
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Safer Alternatives for Pain Relief
Instead of resorting to unsafe combinations, veterinarians may recommend:
- Alternative medications: Tramadol, gabapentin, or amantadine for neuropathic or chronic pain.
- Rehab therapies: Acupuncture, hydrotherapy, physiotherapy.
- Advanced options: Laser therapy or referral to a veterinary pain management specialist.
These options may not replace NSAIDs in every case, but they provide safer adjuncts without exposing pets to life-threatening drug interactions.
Guidance for Pet Parents
- Always disclose medications – Tell your vet about everything your pet is taking, including human meds or supplements.
- Never combine on your own – Don’t give steroids and NSAIDs together unless under strict veterinary guidance.
- Observe wash-out periods – If switching, a 5–7 day gap is often required to reduce risk.
- Regular monitoring matters – Pets on long-term Rimadyl®, Metacam®, or Previcox® need periodic blood tests to safeguard kidney and liver health.
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Take-Home Message
Rimadyl®, Metacam®, and Previcox® are powerful, effective, and generally safe when used properly. But when combined with steroids like prednisone or dexamethasone, they can be deadly. Responsible prescribing, pet owner transparency, and close monitoring are key.
Protecting pets isn’t just about treating pain—it’s about making the right choices to keep them safe for the long run.
Dr. Geoff Carullo is a Fellow and the current President of the Philippine College of Canine Practitioners.
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