Call ASPCA Poison Control: (888) 426-4435 or go to your nearest emergency vet. Do not wait for symptoms to appear.
Ibuprofen (sold as Advil, Motrin, Nurofen, and generics) is never safe for dogs. Even a single human-dose tablet can cause gastric ulceration, intestinal perforation, and acute kidney failure in dogs. The margin between the lowest toxic dose and a lethal dose is small. Dogs cannot metabolise ibuprofen the way humans do.
Border Collies carry the MDR1 (ABCB1) gene mutation at higher rates than most breeds, which impairs the blood-brain barrier's ability to exclude certain drugs and toxins. This means some substances — including common antiparasitic medications and certain sedatives used in treatment — can cause severe neurological toxicity in Border Collies even at doses safe for other breeds. This gene mutation is critical to disclose to your vet.
Why Does Breed Matter for Ibuprofen Toxicity?
Toxic doses for ibuprofen are calculated per kilogram of body weight. A Border Collie typically weighs 12–20 kg, which directly determines how much ibuprofen (NSAID) their body is exposed to relative to their size. Beyond weight, Border Collies have specific traits — outlined in the breed profile above — that can affect how quickly symptoms develop, how severe they become, and what complications to watch for.
When you call Poison Control, always give your dog's exact current weight, not a breed average. Even within the Border Collie breed, a significant weight difference changes the risk calculation meaningfully.
How Much Ibuprofen Is Toxic to a Border Collie?
These thresholds are based on the typical Border Collie weight range of 12–20 kg. Always use your dog's actual weight for the most accurate estimate. Use our Ibuprofen Poisoning calculator to enter your dog's exact weight.
| Dog weight | Mild signs | Serious signs | Potentially fatal |
|---|---|---|---|
| 12 kg (small Border Collie) | 600 mg of ibuprofen | 1.2 g of ibuprofen | 7.2 g of ibuprofen |
| 16 kg (average Border Collie) | 800 mg of ibuprofen | 1.6 g of ibuprofen | 9.6 g of ibuprofen |
| 20 kg (large Border Collie) | 1.0 g of ibuprofen | 2.0 g of ibuprofen | 12 g of ibuprofen |
ℹ️ GI signs at ~50mg/kg; kidney damage at ~100mg/kg; potentially fatal at 600mg/kg+. One 400mg human tablet can exceed the GI-toxic dose for a small dog. Source: ASPCA Animal Poison Control Center dose thresholds. Always confirm with your vet.
Symptoms of Ibuprofen Poisoning in Border Collies
Symptoms typically appear within 1–4 hours of ingestion. Watch for:
Due to Border Collie-specific traits noted above, pay particular attention to neurological signs — seizures, disorientation, or dilated pupils — which the MDR1 mutation can make more severe in Border Collies.
What to Do If Your Border Collie Ate Ibuprofen
- Stay calm and note how much they ate — estimate the amount and type of ibuprofen and your dog's weight. This information is critical for the vet.
- Call ASPCA Poison Control immediately — (888) 426-4435. Available 24/7. A $95 consultation fee may apply, but they will advise whether you need emergency care.
- Do not induce vomiting unless specifically instructed by a vet or Poison Control. Inducing vomiting incorrectly can cause additional harm.
- Go to an emergency vet if symptoms are already present, if a large amount was consumed, or if Poison Control advises it. Find a 24-hour emergency vet near you.
- Bring the packaging of the food or substance if possible — ingredient lists help the vet calculate exact toxin exposure.
Special Considerations for Border Collies
Border Collies with the MDR1 gene mutation require a vet who knows about this — it affects which antidotes and support medications are safe to use. If you don't know your Border Collie's MDR1 status, inform the vet anyway and request that MDR1-sensitive drugs be avoided until testing can be done. This is not a minor detail in a poisoning scenario.
Frequently Asked Questions
No — never give ibuprofen to dogs. It causes GI ulceration and kidney damage even at low doses. Ask your vet about safe pain relief options for dogs.
Call Poison Control or your vet immediately. A single 200mg tablet can exceed the GI-toxic threshold for a small dog (under 4kg). Risk depends on your dog's exact weight.
Yes — most human NSAIDs are dangerous for dogs. Naproxen (Aleve) is even more toxic to dogs than ibuprofen. Only veterinary NSAIDs prescribed for dogs are safe.
Treatment includes induced vomiting (if within 1–2 hours), activated charcoal, IV fluids to protect kidneys, gastroprotectant medications, and close monitoring of kidney values for 48–72 hours.