Petco Text Logo
Petco Pet Logo
  • Two Easy Ways to Start Earning Rewards!

    rewards header
    Become a member today!
    Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
    Petco Pay LogoBecome a credit card member today!

    Earn 2X Pals Rewards points at Petco
    when you use Petco Pay!

    APPLY NOW
    Learn More About Petco Pay Benefits

Puppy not eating, vomiting, sleeping after first vaccination?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | 1 month and 19 days old

my puppy has its first vaccination 3 days ago and wont eat after . he throws up and sleeps a lot.

1 Answer

Most Helpful Answer

Dr. Strydom, DVM

Answered By Dr. Strydom, DVM

Veterinarian

Published on January 20th, 2019

This sounds serious. You need to get Rocky to a vet as soon as possible for treatment. This is not something you can "fix" at home. The two main possibilities for his symptoms are: 1) vaccination reaction or 2) parvo virus however, there are any numbers of things that could be the issue. Without examining him myself it is too hard to say. Please get Rocky to a vet ASAP. A puppy his age will get severely dehydrated with all that vomiting and not eating.
Vote Icon1Pet Parents found this answer helpful

Smart Picks for Smart Questions

Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Share

Styled arrow button