Why is my dog lethargic, not eating or drinking after his shots?

Related Answers from Veterinarians

• Answered By Angel Alvarado, LVT

  Licensed Veterinary Technician

  Published on October 20th, 2017

  This may not be an allergic reaction to the vaccines. An allergic reaction is typically characterized by swelling of the face, vomiting and/or diarrhea.
  She may be a bit sore from the combination of vaccines. It should pass in 24-36 hours. If not, have her rechecked by your veterinarian. Have a note placed in her record to split the vaccines.
  If she becomes extremely lethargic or unresponsive or if she has difficulty breathing, then have her examined at the nearest veterinary ER.

  

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• Answered By Dr. Strydom, DVM

  Veterinarian

  Published on February 13th, 2020

  Yes, I would be a bit worried. He is probably having a mild vaccine reaction. If his symptoms last longer than 24 hours you should have him to the vet for an exam. At this stage you can just let him rest and monitor him. DO NOT give him any over the counter medications.

  

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• Answered By Jessica Desrosiers

  Veterinary Technician

  Published on January 15th, 2019

  I agree with your vet. Vaccines can make a dog a little tired or lethargic the day after, however if Daisy is still acting like that after 24 hours, or any of her symptoms worsen, then bringing her back to the vet is best to treat any allergic reactions or other underlying issues that may be the cause.
  
  You can try to encourage some eating with a little bland boiled chicken and rice, however if symptoms continue, seeking vet care is best.

  

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