Veterinary NSAIDs (Carprofen, Meloxicam — Therapeutic Use, Overdose, and Off-Label Risk in Cats) — pet safety profile
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Veterinary non-steroidal anti-inflammatory drugs (NSAIDs) — primarily carprofen (Rimadyl, Novox) and meloxicam (Metacam, Loxicom) — are first-line pharmacotherapy for canine osteoarthritis, post-surgical pain, and chronic inflammatory conditions.
What is this product?
Veterinary non-steroidal anti-inflammatory drugs (NSAIDs) — primarily carprofen (Rimadyl, Novox) and meloxicam (Metacam, Loxicom) — are first-line pharmacotherapy for canine osteoarthritis, post-surgical pain, and chronic inflammatory conditions. Both are COX-2-preferential inhibitors with FDA-CVM approval for dogs; meloxicam has a one-time-injectable feline approval (post-operative only). Therapeutic-dose risk in dogs centers on GI ulceration (5-10% incidence on chronic dosing per FDA-CVM ADE database), idiosyncratic hepatotoxicity (carprofen — Labrador over-representation), and renal papillary necrosis (especially in dehydrated, hypovolemic, or geriatric dogs). The dominant safety signal in pet households is OFF-LABEL CHRONIC USE IN CATS — cats are markedly more sensitive to NSAIDs than dogs because they lack hepatic glucuronidation capacity for these substrates. The FDA issued a 2010 safety advisory after multiple feline deaths from off-label meloxicam dispensing; the boxed warning explicitly prohibits repeated/chronic administration. ASPCA APCC ranks NSAID ingestion (combined human + veterinary) in the top 5 pet poison-call categories, with cats accounting for disproportionate mortality. Owner-driven dose mistakes (giving two doses, sharing across multi-dog households, dosing by guess rather than weight) are the second largest exposure driver.
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