Ibuprofen Toxicity Calculator for Dogs
ASPCA APCC and Merck Veterinary Manual report ibuprofen vomiting from about 25 mg/kg in dogs, kidney injury risk from about 175 mg/kg, seizures above about 400 mg/kg and potentially lethal effects above about 600 mg/kg, so one adult tablet can matter for a small dog. (ASPCA APCC; Merck Veterinary Manual)
Ibuprofen toxicity calculator
Educational estimate from published toxicology references. Not veterinary advice. If in doubt, call your vet.
Risk level (example)
Call your vet
Estimated dose: 14.7 mg/kg
Below the ~25 mg/kg level where vomiting is reported, but sensitive or older dogs can still be affected.
- Call your vet for advice; stomach protection may be suggested.
- Note the product, amount and time eaten; keep the packaging.
- Do not induce vomiting unless a veterinarian tells you to.
Emergency line
ASPCA APCC (888) 426-4435, fee may apply · Pet Poison Helpline (855) 764-7661, fee may apply
How thresholds are set: Published references (ASPCA APCC, Merck Veterinary Manual) report vomiting from about 25 mg/kg, GI signs up to about 125 mg/kg, kidney injury risk from about 175 mg/kg, seizures above about 400 mg/kg and potentially lethal effects above about 600 mg/kg. Repeated doses can cause harm at lower amounts.
Source: Merck Veterinary Manual — toxicoses from human analgesics; ASPCA APCC — Toxicology Brief: the 10 most common toxicoses in dogs (ibuprofen)
Educational estimate from published toxicology references. Not veterinary advice. If in doubt, call your vet.
Result tiers and what to do now
Call your vet — Below ~25 mg/kg
Call your vet for advice; sensitive or older dogs can still be affected. (ASPCA APCC)
Call your vet now — ~25–175 mg/kg
Call right away; GI signs and ulcer risk are reported in this range. (ASPCA APCC)
Emergency — ≥ ~175 mg/kg
Go to the nearest emergency vet now; kidney injury risk from ~175 mg/kg, seizures above ~400 and potentially lethal above ~600 mg/kg. (Merck Veterinary Manual)
Call for help
Call your vet or an emergency clinic. ASPCA Animal Poison Control Center (888) 426-4435 or Pet Poison Helpline (855) 764-7661 (fees may apply). Never induce vomiting without a vet's say-so.
Dose by dog weight
| Dog weight | 25 mg/kg (vomiting) | 175 mg/kg (kidney risk) | 400 mg/kg (seizures) |
|---|---|---|---|
| 5 lb (2.3 kg) | 0.3 tablets | 2 tablets | 4.5 tablets |
| 10 lb (4.5 kg) | 0.6 tablets | 4 tablets | 9.1 tablets |
| 20 lb (9.1 kg) | 1.1 tablets | 7.9 tablets | 18 tablets |
| 40 lb (18.1 kg) | 2.3 tablets | 16 tablets | 36 tablets |
| 80 lb (36.3 kg) | 4.5 tablets | 32 tablets | 73 tablets |
Repeated doses over several days can cause stomach ulcers and kidney injury at lower amounts. Published ranges are not safe allowances.
Frequently asked questions
How much ibuprofen is toxic to a dog?
Published references (ASPCA APCC, Merck) report vomiting from about 25 mg/kg, GI signs up to about 125 mg/kg, kidney injury risk from about 175 mg/kg, seizures above about 400 mg/kg and potentially lethal effects above about 600 mg/kg.
Are Advil and Motrin the same as ibuprofen?
Yes. Advil and Motrin are brand names for ibuprofen; check the tablet strength (usually 200 mg) on the package.
Can I give my dog ibuprofen for pain?
No. Do not give human pain relievers unless a veterinarian prescribes them; dogs are far more sensitive to ibuprofen than people.
Should I make my dog vomit?
Never induce vomiting without a veterinarian's say-so. Your vet or a poison hotline can tell you whether it is appropriate.
Related calculators
Sources
- ASPCA APCC — Toxicology Brief: the 10 most common toxicoses in dogs (ibuprofen)
- Merck Veterinary Manual — toxicoses from human analgesics
- Pet Poison Helpline — ibuprofen
Educational estimate from published toxicology references. Not veterinary advice. If in doubt, call your vet.