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My puppy is throwing up blood after deworming. Is this normal for him?

Updated On September 23rd, 2025

Pet's info: Dog | Pit Bull Terrier | Male | unneutered | 3.5 lbs

My 11 week old pit bull puppy has a serious worm infection and his last dose of 3 day treatment was yesterday with safe guard dewormer. Today he is throwing up blood. He hasn't had an appetite for 2_3 days. Barely poops but when he does its loose drops almost. His tongue and gums are pale today now too. The blood wasn't clumps but rather just consistently red. Is this normal with the dewormer? He has had problems since we brought him home about one week ago.

2 Answers

Most Helpful Answer

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Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on December 11th, 2016

Poor pup! No, this isn't normal at all - I would recommend taking him to an emergency vet today if at all possible. Vomiting blood with pale gums indicates a serious, life-threatening problem. I would be concerned that he may have parvo or some other serious problem such as an intestinal obstruction, as the dewormer would not cause these symptoms. The emergency vet can do a parvo test or other testing if needed to help determine what's wrong and get him started on appropriate treatment right away.

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Other Answers

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    Answered By Jessica Keay, DVM

    Veterinarian

    Published on May 17th, 2018

    I am very sorry to hear about Mangoe. These symptoms are not normal for a puppy and I would recommend getting her in to see a vet right away, especially if she is lethargic. Because she is so tiny she is at risk for hypoglycemia (low blood sugar) and this can be life threatening. I would rub some karo syrup or honey on her gums and take her in straight away.

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