Is it normal for my dog to seem really lethargic after the vet gave her an injection for allergies today?

My dog seemed perfectly fine this morning, but after her allergy shot at the vet today, she's been acting unusually lethargic and sleepy. I expected her to feel a bit off, but this seems more than I anticipated. Is this typical after such injections, or should I contact the vet again?

Answer

It’s common for dogs to display mild side effects, such as lethargy, following an allergy shot. However, significant changes in behavior warrant extra caution and attention.

  • Monitor your pet's behavior closely after injections.
  • Keep track of any unusual symptoms or reactions.
  • Stay in contact with your vet for guidance if concerns persist.

While it's typical for dogs to experience some tiredness after an allergy shot due to their body adjusting, extreme lethargy is less common. It's important to monitor your dog's symptoms and maintain direct communication with your veterinarian. Sometimes, the sedation effect from the medication can be more potent than expected, but your vet should be alerted if symptoms seem severe or persist beyond a few hours.

Book a consultation with a licensed vet at Dial A Vet for just $49 AUD if you're unsure or symptoms are getting worse.

Frequently Asked Questions

  • What are common side effects of allergy shots in dogs?

    Common side effects include mild lethargy, slight swelling at the injection site, and sometimes a temporary decrease in appetite.

  • How long should lethargy last after an allergy shot?

    Lethargy typically resolves within a few hours up to a day. If it persists or worsens, it's best to consult your veterinarian.

  • When should I be worried about my dog's reaction to an allergy shot?

    Contact your vet if your dog shows signs of severe lethargy, persistent vomiting, hives, difficulty breathing, or any other concerning behavior.

If this is an emergency, please seek immediate veterinary care.

Still worried? Chat to a real vet.

Book a fast telehealth consult for personalised guidance and next steps.

Book a consult

Next available appointment

Loading…