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.
Great Danes are the largest dog breed by height and among the heaviest. Their enormous body weight means they need a much higher absolute dose of any toxin before crossing clinical thresholds — but this also means a single ingestion can be a very large absolute quantity. They have extremely high rates of bloat (GDV) and dilated cardiomyopathy, both of which interact dangerously with many toxins.
Why Does Breed Matter for Ibuprofen Toxicity?
Toxic doses for ibuprofen are calculated per kilogram of body weight. A Great Dane typically weighs 50–90 kg, which directly determines how much ibuprofen (NSAID) their body is exposed to relative to their size. Beyond weight, Great Danes 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 Great Dane breed, a significant weight difference changes the risk calculation meaningfully.
How Much Ibuprofen Is Toxic to a Great Dane?
These thresholds are based on the typical Great Dane weight range of 50–90 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 |
|---|---|---|---|
| 50 kg (small Great Dane) | 2.5 g of ibuprofen | 5.0 g of ibuprofen | 30 g of ibuprofen |
| 68 kg (average Great Dane) | 3.4 g of ibuprofen | 6.8 g of ibuprofen | 41 g of ibuprofen |
| 90 kg (large Great Dane) | 4.5 g of ibuprofen | 9.0 g of ibuprofen | 54 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 Great Danes
Symptoms typically appear within 1–4 hours of ingestion. Watch for:
Due to Great Dane-specific traits noted above, pay particular attention to abdominal bloating or unproductive retching, which in a Great Dane can indicate GDV — a life-threatening secondary emergency on top of poisoning.
What to Do If Your Great Dane 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 Great Danes
Great Danes with GDV or cardiomyopathy face compounded risks from toxic ingestion. If your Dane is showing signs of a distended abdomen alongside other poisoning symptoms, treat GDV as a co-emergency and say so when calling Poison Control. Their sheer size can make physical examination and decontamination more logistically challenging for vets.
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.