It's common for kittens to feel a bit tired after vaccinations, but noticeable lethargy can understandably be concerning. Monitoring her closely for any changes is key.
- Increased sleepiness is often a normal response.
- Most side effects subside within 24-48 hours.
- Keep an eye out for any other unusual symptoms.
Vaccines are an important part of keeping your kitten healthy, but they can sometimes cause mild side effects like fatigue or slight fever. This happens as her immune system responds to the vaccine. It's usually nothing to worry about unless she starts showing more severe symptoms, such as persistent vomiting, difficulty breathing, or a lack of appetite. In such cases, consulting your vet again would be wise.
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
- How long will my kitten feel lethargic after her vaccinations?
Your kitten may be slightly sleepy for 24-48 hours as her body adjusts to the vaccine.
- What symptoms should prompt me to seek immediate veterinary care?
If she shows signs of severe reactions, such as difficulty breathing, persistent vomiting, or has a significant change in behavior, please contact a vet right away.
- Can I do anything to help my kitten recover from the vaccine?
Make sure she has a quiet, comfortable place to rest and ensure she has access to food and water when she feels ready.
Clinically Approved Standard by Dial A Vet Veterinary Team
Disclaimer: The customer and expert messages presented herein may have been altered with artificial intelligence or modified to enhance readability and safeguard the privacy of individuals. This content is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is experiencing a medical emergency, contact your local veterinarian or emergency animal hospital immediately. Talk to a vet now.

