Not Safe

Not SafeVet Reviewedmedication

Not Safe for Dogs

Medium dog serving: never

Key warning: all naproxen — Aleve and all generic forms

Can Dogs Have Naproxen (Aleve)? No — More Toxic Than Ibuprofen

This food is NOT safe for dogs. Keep it away from your pet.

Naproxen (Aleve) is more toxic to dogs than ibuprofen and one of the most dangerous common medications for pets. Even a single tablet can be fatal to small dogs.

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Warning Signs & Symptoms

Severe vomiting, bloody diarrhea, gastric ulcers, acute kidney failure, neurological symptoms, death.

If Your Dog Ate This

Call vet or ASPCA Poison Control 888-426-4435 immediately.

What to Avoid

all naproxen — Aleve and all generic forms

Preparation & Serving

Call vet or ASPCA Poison Control 888-426-4435 immediately. This is a life-threatening emergency requiring urgent veterinary intervention.

Did you know?

Naproxen has a half-life of 12-17 hours in humans but over 74 hours in dogs — meaning it stays active in a dog's system three to six times longer causing cumulative toxicity from what seems like a single dose.

Portions & nutrition

Serving (small dog): never
Serving (medium dog): never
Serving (large dog): never
Calories (per 100g): 0
Safe frequency: Never

Source

Source: ASPCA

What You Need to Know

Naproxen is an NSAID with a very long half-life in dogs meaning it stays in the system far longer than in humans causing prolonged toxicity. A single 220mg tablet can be lethal to a dog under 10kg. Dogs have no safe dose of naproxen. Keep all Aleve and naproxen products completely away from dogs.

Breed-Specific Notes

All dogs at risk — small dogs face lethal doses from a single tablet.

Not sure what to do next? Read our emergency guide What to Do If Your Dog Eats Something Toxic

Want to know what other dangers are hiding in your home?

Take the 60-second kitchen safety assessment to find out your dog's risk score.

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If Your Dog Ate This — Act Now

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Frequently asked questions

Is Naproxen for Dogs safe for dogs?: No, Naproxen for Dogs is not safe for dogs. Naproxen (Aleve) is more toxic to dogs than ibuprofen and one of the most dangerous common medications for pets. Even a single tablet can be fatal to small dogs.
What happens if a dog eats Naproxen for Dogs?: If a dog eats Naproxen for Dogs, they may experience: Severe vomiting, bloody diarrhea, gastric ulcers, acute kidney failure, neurological symptoms, death.
How much Naproxen for Dogs can a dog eat?: Naproxen is an NSAID with a very long half-life in dogs meaning it stays in the system far longer than in humans causing prolonged toxicity. A single 220mg tablet can be lethal to a dog under 10kg. Dogs have no safe dose of naproxen. Keep all Aleve and naproxen products completely away from dogs.

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Medical Disclaimer: This information is for educational purposes only. Always consult a licensed veterinarian before making dietary changes for your pet.