Sometimes the dog will eat something it shouldn’t. Sometimes it’s not a poisoning, it’s annoying, like a cake, or a pile of chicken skin and you know it’s going to cause diarrhea, BAD.
Other times it’s medicine or some other toxic molecule or poisoning substance.
How and When to Induce Vomiting: Use Hydrogen Peroxide for Poisoning
In any event, TWO HOURS is an important parameter to recall, because stomach-emptying occurs within two hours, so if your dog JUST ATE that bunch of grapes 5 minutes ago, it’s fine. Induce vomiting. Good-t0-go.
But if you discover a problem closer to, or AFTER the two hour window, it’s going to be a problem.
Yes, Doc: 3% hydrogen peroxide at approximately ⅓ US fluid ounce per 10 pounds, given orally—equivalent to 10 mL or 2 teaspoons per 10 pounds.
Maximum per dose: 45 mL—approximately 1½ fluid ounces—even for larger dogs. This follows ASPCA’s 1 mL/lb dosing.
For Wagner’s tutorial, pair the dose with “Only give it if your veterinarian directs you.” Peroxide can injure the stomach; avoid inducing vomiting in dogs with tremors, seizures, reduced alertness, or difficulty swallowing because of aspiration risk. Use only 3%, never stronger concentrations or in cats.
