Ask a Dog Vet and Get Answers to Your Dog Veterinary Questions
Welcome! Thanks for asking your question. My name is***** am a licensed veterinarian and I will be assisting you today. First I need to ask you a few questions so that I can be well informed and give you the best advice.
1- How much does she weigh?
2- How long has it been since you gave her naproxen?
3- Do you have hydrogen peroxide 3%?
1- Is she currently showing any symptoms?
Friend, naproxen is very easily toxic to dogs. Dosages at or above 10-25mg/kg dogs can develop gastrointestinal ulceration and acute kidney failure. In this case, based on weight your dog took a dose of 42mg/kg; at this dose your dog could develop ulceration of the gastrointestinal tract and kidney failure. Unfortunately there is not much you can do at home. I would strongly recommend taking her to the nearest ER veterinarian for supportive care (IV fluids, activated charcoal, etc.). Do not wait until symptoms (vomiting, lethargy, anorexia, etc.) develop; treating before symptoms develop will have a better prognosis. I realize that this answer may not be entirely to your liking, and I regret being the bearer of information that you really don’t want to hear. But it would be unfair to you and unprofessional of me were I to provide you with anything less than truthful and honest information. I hope you understand.
My goal is to provide you with excellent service - I hope I've provided the information you were seeking, if you feel you have received anything less, please reply back as I am happy to address follow-up questions. Kindly rate me when you are done.