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 many hours since he ate the onions?
2- How much does he weigh?
3- Can you give me an idea how many or ounces of onions he ate?
4- Do you have hydrogen peroxide 3%?
Please give me a few minutes to type your answer. Thank you.
Friend, onion toxicity in dogs is very dependent on the amount ingested and weight of the dog. The toxic dose is 5g/kg, this means that for a 70 lbs dog he would need to eat at least 159 grams or 5.6 ounces; if it was a small amount off a sub sandwich I doubt it was that much onions. If it was that much you can try to induce vomiting with peroxide 3%. This is what you do:
1- Give him 1 tablespoon of hydrogen peroxide orally to induce vomiting.2- Allow him to walk for a minute and move his belly to mix stomach content with peroxide. If he does not vomit within 5-10 minutes, repeat it again. Can give a total of 3 times 5-10 minutes apart.3- If he does not vomit or you do not see the onions in the vomit follow up with your family veterinarian in 2-3 days for a blood test to make certain everything is okay.4- Symptoms to look for that would require immediate vet care are: Vomiting, lethargy, pale gums, etc.
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.