Understanding NSAID Toxicity in Dogs
Ibuprofen inhibits cyclooxygenase (COX) enzymes. In dogs, this inhibition is not selective; it severely reduces blood flow to the stomach lining and the kidneys. Unlike humans, dogs cannot process this drug efficiently, leading to rapid accumulation and organ damage.
Clinical Toxicity Thresholds
- < 25 mg/kg: Gastrointestinal risk. Monitor for vomiting or lethargy.
- 25 – 100 mg/kg: High risk of gastric ulceration and severe mucosal damage.
- > 100 mg/kg: Critical risk of Acute Kidney Injury (AKI).
- > 400 mg/kg: Extreme emergency; risk of seizures, coma, and multi-organ failure.
Frequently Asked Questions
- Why is it so dangerous? Dogs have a high sensitivity to NSAIDs. A single standard tablet can be enough to trigger severe gastric bleeding in small breeds.
- What should I do now? If your dog has ingested a human painkiller, do not wait for symptoms. Early intervention (within 1–2 hours) allows vets to induce vomiting before the drug is absorbed into the bloodstream.
- What are the clinical signs? Look for persistent vomiting, dark/tarry stools (melena), excessive thirst, or sudden weakness.