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My dog threw up blood after Vanectyl dose change. What should I do?

Updated On September 23rd, 2025

Pet's info: Dog | Standard Schnauzer | 28 years and 3 months old

my dog is on vanectyl. she missed some doses. meaning see was supposed to got 2 tablets every 12 hours but got 1 tablet every 12 hours. since she missed it i.gave her 2 tablets every 12 hours. but she threw up once yesterday but today she threw up and there was 1 red blood dot

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2 Answers

Most Helpful Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on August 20th, 2017

I would continue at the dose of 1 tablet every 12 hours and taper off as prescribed by your vet. This medication may not be the cause of the vomiting, though, and if it continues tomorrow I would take Patsy to the vet for a recheck. Sometimes vomiting can cause irritation to the esophagus and you may see a tiny amount of blood. However, if she continues vomiting and the amount of blood seems like it is getting bigger, she should see a vet immediately. You might take her food away for 12 hours to help with nausea, though she should be encouraged to drink water or pedialyte.

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    Answered By Susan England-Foster

    Veterinarian

    Published on August 20th, 2017

    I would recommend stopping the medication if she is vomiting and you think blood is present. This medication is a steroid and high doses of steroids can lead to issues like Gastrointestinal ulcers. If she has developed an ulcer it is possible she would vomit blood. I would stop the medications and continue a bland diet with an over the counter anti acid. However I would contact your vet immediately and take Patsy back into be seen. Hopefully it is nothing serious but I would air on the side of caution

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