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Welcome to Justanswer! I am Dr. Altman and happy to assist you both today!This does concern me because naproxen is not shown to be safe in dogs in general. In addition the dose is 2 mg/kg every other day so for your dog that would be approximately 8 mg. The ingested dose is 50 mg/kg (if we assume 200 mg was ingested) which is approximately 6 times the dose used in pets.According to literature: The reported oral LD50 in dogs is >1000 mg/kg. In dogs, PO ingestions of >5 mg/kg can cause gastrointestinal signs and GI ulceration; >25 mg/kg (some dogs as low as 10 mg/kg) can cause significant renal damage, and >50 mg/kg can result in neuro signs.If your dog ingested this within the last hour then you can induce vomiting with 3% hydrogen peroxide 1 tsp per ten pounds (i.e. 1 tsp) then walk around to mix it in the stomach and agitate the lining. If no vomiting within 10-15 minutes it can be repeated once only in hopes of inducing vomiting. You can also elect to head straight to a veterinary er to give stronger medications to get this up and reduce absorption as swiftly as possibleI would also advise having him seen at a veterinary er to give activated charcoal orally to coat the intestinal tract and reduce the possibility of absorption of this medication. Even if he ingested half of this dose it is still a high dose with risk of significant gi changes and would not advise monitoring in this situationI hope this makes sense, please consider a veterinary er in this situation with the possible amount ingestedPlease let me know if I can be of any further assistance this evening
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Good morning, I wanted to check in on you and Jed to see how he is doing since you asked your question yesterday? I would love an update when you are able...If you are satisfied with our chat please rate or accept so I may be compensated for my time. Thank you!