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Why is my 6-month-old puppy still having diarrhea and vomiting?

Updated On September 23rd, 2025

Pet's info: Dog | American Bully | Male | neutered | 6 months and 1 day old | 25 lbs

I have a 6 month old rescue pup who has been having some stomach troubles. He’ll have at least one loose stool a day and sometimes it is very runny (and mucousy) diarrhea. He also will sometimes vomit without warning (almost always in the middle of the night/late morning). I took him to the vet last week and they said he seemed healthy and prescribed him a week’s worth of pills to calm his upset stomach. This seemed to work but as soon as he finished the

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Answered By Maria DVM

Veterinarian

Published on August 11th, 2019

I recommend getting a stool sample on Bear and check for parasites. I would put Bear on a bland diet (prescription based). I would also disc an antacid with your veterinarian. What type of dog food is Bear on? Different types of food can upset a dogs stomach so making sure his diet is appropriate is important. Thank you for using Petco Pet Education Center, formerly Petcoach.

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