Petco Text Logo
Petco Pet Logo

  • Two Easy Ways to Start Earning Rewards!

My dog ate a grape. Is too much peroxide harmful after vomiting?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 6 months and 4 days old | 27 lbs

I had to give my do hydrogen peroxide to induce vomiting since he ate a grape. The vet said to give him 3 tablespoons but giving it to him I was having trouble measuring exactly. Is it possible I have too much and it could be harmful? He has now stopped vomiting and is acting normal.

2 Answers

Most Helpful Answer

Image profile

Answered By Lauren Jones VMD

Veterinarian

Published on August 5th, 2020

I'm glad that your vet recommended that Charlie vomit up the grape that he'd eaten. The biggest challenge with grape ingestion is that there is no known "safe" amount. With this type of potential toxicity, some dogs can experience acute kidney failure after eating just one grape, while others can be perfectly fine after eating a bunch. As far as using hydrogen peroxide to induce vomiting, some studies have shown that there can be considerable damage and irritation to the esophagus and stomach due to hydrogen peroxide. Generally, I do not recommend using it for this reason. I understand that it's really challenging to measure and force-feed this substance, so it's really easy to give a little extra. Since Charlie has not stopped vomiting and is acting normally, odds are very good that he'll be absolutely fine. Just keep a close eye on him for changes in his overall demeanor, appetite, vomiting, hard swallowing (gulping not associated with eating or drinking), or any other concerns. If problems arise, be sure to take him to your vet, but again, odds are very much in your favor. I hope that everything goes well!

Vote icon

3Pet Parents found this answer helpful

Other Answers

  • Image profile

    Answered By Linda G, MS, DVM

    Veterinarian

    Published on

    Hello. We generally recommend 1 ml of peroxide per pound, with the maximum amount being 45 mls. This would be 3 tablespoons. If your dog truly weighs only 27 pounds, then I would not give any more peroxide. If Charlie does not vomit within 20 minutes of administering the peroxide, then you can take him in to your vet so another medication can be given to induce vomiting. But if all he ate was 1 grape, then he should be just fine. Just watch him for the next 2-3 days for indications of illness, including loss of appetite, vomiting & lethargy. If he remains bright & alert, no problems eating or drinking, then the one grape did not harm him & he will be fine. Any concerns, just see your vet tomorrow for followup. Thanks for contacting Petco Pet Education Center, formerly Petcoach.

    Vote icon

    1Pet Parents found this answer helpful

See More Answers

Related Questions

Petco Pet Education Center
Health & Wellbeing
Why is my mouse's eye swollen, cloudy, and has pus?
Is your mouse's eye swollen, cloudy, and pussy? Dr. Melanie, a certified vet, discusses severe eye issues like infection or abscess, urging an immediate visit.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
What fish dog food helps dry skin if my dog eats Science Diet?
Is your dog's dry skin a concern? A certified vet offers expert advice on finding the best fish-based dog food alternatives to Science Diet for essential oils.
Updated on February 04, 2026
Petco Pet Education Center
Food & Nutrition
What's the best way to feed my hamster when I'm going on a trip?
Planning a trip to Chicago and need to feed your Syrian hamster? A certified vet offers expert advice on feeding options for short and long trips, plus finding trusted pet sitters.
Updated on December 04, 2025
Petco Pet Education Center
Food & Nutrition
Can chickens eat bell peppers daily and what about veggie salads?
Can your chickens eat bell peppers and salads? Veterinarian Dr. Elizabeth offers expert advice on safe feeding, frequency, and how fresh veggies boost vibrant yolks.
Updated on December 04, 2025
Petco Pet Education Center
Food & Nutrition
My newly adopted pet won't eat hay. What can I do to encourage it?
Adopted a pet not eating hay? Dr. Stafford, a certified vet, offers expert guidance on encouraging hay consumption, including adjusting pellets and trying fresh types.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
My pet is breathing hard, not eating, and lethargic. What's wrong?
Is your rat breathing heavily, won't eat, and has no energy? A Licensed Vet Tech explains potential causes like infection and age, urging a vet visit for diagnosis.
Updated on December 04, 2025
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Book Now

Sponsored