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.
Shih Tzus are brachycephalic — their flat facial structure restricts airflow and makes respiratory compromise from vomiting or toxic exposure more dangerous than in longer-nosed breeds. They are curious and bold for their size, often accessing food left unattended. Their kidney function can also be more sensitive than many breeds, making renal-toxic substances especially dangerous.
Why Does Breed Matter for Ibuprofen Toxicity?
Toxic doses for ibuprofen are calculated per kilogram of body weight. A Shih Tzu typically weighs 4–7.5 kg, which directly determines how much ibuprofen (NSAID) their body is exposed to relative to their size. Beyond weight, Shih Tzus 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 Shih Tzu breed, a significant weight difference changes the risk calculation meaningfully.
How Much Ibuprofen Is Toxic to a Shih Tzu?
These thresholds are based on the typical Shih Tzu weight range of 4–7.5 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 |
|---|---|---|---|
| 4 kg (small Shih Tzu) | 200 mg of ibuprofen | 400 mg of ibuprofen | 2.4 g of ibuprofen |
| 5.5 kg (average Shih Tzu) | 275 mg of ibuprofen | 550 mg of ibuprofen | 3.3 g of ibuprofen |
| 7.5 kg (large Shih Tzu) | 375 mg of ibuprofen | 750 mg of ibuprofen | 4.5 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 Shih Tzus
Symptoms typically appear within 1–4 hours of ingestion. Watch for:
Due to Shih Tzu-specific traits noted above, pay particular attention to any signs of breathing difficulty — their flat faces mean respiratory compromise can escalate rapidly compared to other breeds.
What to Do If Your Shih Tzu 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 Shih Tzus
Like all brachycephalic breeds, Shih Tzus have increased aspiration risk during vomiting. Vets may use different decontamination protocols than they would for non-brachycephalic dogs. Their documented kidney sensitivity also means that renal-toxic substances (like grapes or certain NSAIDs) warrant aggressive fluid support and close monitoring of kidney values.
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.