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Why is my puppy sick with diarrhea after vaccine and deworming?

Updated On September 23rd, 2025

Pet's info: Dog | German Shepherd | Male | 1 month and 24 days old | 2.5 lbs

Hi my dog got his vaccine and deworming on saturday.it lost its appetite and diahrrea.im worried plz help.its 45 days old puppy.

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2 Answers

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on August 25th, 2019

The diarrhea could be caused by the deworming treatment. Feed Rudy a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in his normal diet. If the diarrhea continues on the bland diet, he refuses to eat the bland diet, he starts vomiting food, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away. Best of luck.

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    Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

    Veterinarian

    Published on June 17th, 2018

    That could be completely normal, no worries. I would suggest to start feeding with a bland diet based on boiled chicken and rice in small portion every 6 hours for the following 48hours. Then gradually reintroduce the normal diet over 5 days. I would definitively recommend a veterinary check up if the signs persist or you notice vomiting, lethargy or inappetence. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

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