My dog got an allergy shot on Friday and now seems super lethargic. Should I be worried?

Since my dog received her allergy shot on Friday, she has been unusually lethargic all weekend, spending most of her time lying around and not showing much interest in her usual activities. Is this a normal reaction to the shot, or could there be something else going on that I should be concerned about?

Answer

It's understandable to be worried when your dog is not her usual self after receiving an allergy shot. Lethargy can sometimes be a mild, temporary side effect, but monitoring her condition closely is important.

  • Lethargy is a common side effect after vaccinations or shots.
  • Most side effects resolve within a day or two.
  • Watch for other symptoms like vomiting or difficulty breathing.

Following an allergy shot, it’s normal for some dogs to feel a bit more tired than usual. This reaction often subsides within 24 to 48 hours. Keep an eye on her for any additional symptoms such as vomiting, swelling, or breathing difficulties, which can be signs of a more serious reaction. However, if she's simply resting more but otherwise alert, it's likely a normal response. Providing a calm, comfortable space during this time can help her recovery.

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

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 mild discomfort. These symptoms usually resolve within a day or two.

  • When should I be concerned about my dog's reaction to a shot?

    If your dog shows signs of severe lethargy, vomiting, swelling, or difficulty breathing, contact a veterinarian immediately, as these could indicate a serious reaction.

  • How can I help my dog feel comfortable after her shot?

    Ensure she has a quiet, comfortable place to rest, encourage her to drink water, and monitor her closely for any changes in behavior or new symptoms.

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