My Doberman ate Naproxen. Is 500mg too much for an 85lb dog?

Most cases of toxicosis occur in dogs that are repeatedly given Naproxen. I did find in an article online (the link is below if you want to read the entire article) that "The APCC data suggest that a one-time dose of 7 mg/kg or greater can cause clinical signs of GI irritation and ulceration (vomiting, diarrhea, melena, anorexia), whereas azotemia (elevation of kidney levels) is possible at doses ranging from 13 to 15 mg/kg." Based on your dogs weight of 44 pounds, if he ate one 250 mg tablet then the dose would have been 12.5 mg/kg. The best thing would be to have your vet check kidney values 24-48 hours after the ingestion to make sure all values are normal. Hope this information helps! http://veterinarymedicine.dvm360.com/toxicology-brief-naproxen-toxicosis-dogs?id=&pageID=1&sk=&date=

Naproxen is toxic to dogs, however it has been used in exceptional situations at typically 2mg/kg. Your dog weighs 40 lbs, ie 18 kg , so did not ingest a dangerous amount of Naproxen at 100mg. Please make sure to keep all medications locked up so your dog cannot reach and eat them.

Hello. Cora consumed the equivalent of 9.7 mg/kg of naproxin. We begin to see GI signs like vomiting & diarrhea, possibly with blood at 7 mg/kg & kidney damage at 13 mg/kg. Since there are other factors that may impact how badly Cora may react to the medication, including any preexisting conditions, dehydration, etc., I think it would be prudent to take Cora to an emergency clinic for decontamination & any possible treatment. I think she should be fine, but better safe than sorry. Thanks for using Petco Pet Education Center, formerly Petcoach.

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! A 250mg tablet is over 5mg/kg which is close to the gastro-intestinal signs and ulceration. It is probably too late to induce vomiting but that would have been ideal to do right after she ate. It is best to have her seen by your Vet to start gastro-intestinal protectants like omeprazole, sucralfate and misoprostal to protect her GI tract from ulceration just to be safe. I hope this helps and I wish Kira the best!

I am sorry to hear about your concern for Bandit. Eating one tablet of 220mg of aleve would be a dose of 6.4 mg per kg of body weight in your dog. According to data at the ASPCA, this dose primarily results in GI symptoms such as anorexia, vomiting, diarrhea, and sometimes GI bleeding. Treatment may include gastrointestinal protectants to help coat and soothe the GI tract, fluid therapy to help any dehydration due to diarrhea, so these are things your vet may recommend. If your dog is geriatric or has any concern for prior kidney disease then they can be at increased risk for kidney damage and bloodwork may be recommended to monitor for this.

Naproxen can be extremely poisonous to dogs, and have a very low safety margin (which means it is very potent). You need to take Atticus to a vet immediately.

The only case report of a severe toxic reaction in a dog after a single dose of Alleve involved an elderly dachshund that received 35.7 mg/kg of the drug. your dog received approximately 6.5 mg/kg, fortunately this is not likely to cause any serious toxic reaction, inducing vomiting is not needed in this case but in the future i strongly recommend avoiding this medication altogether as well as any other pain killer from your personal cabinet.