It’s normal for cats to feel a bit lethargic and under the weather after receiving vaccinations. These reactions are usually mild and resolve within a day or two.
- Lethargy is a common mild reaction after vaccinations.
- Observe your cat for improvement over the next 24–48 hours.
- Seek veterinary advice if symptoms worsen or new symptoms appear.
Vaccinations can sometimes produce mild side effects such as lethargy, low energy, and a decrease in appetite. These symptoms are typically temporary and should improve within a couple of days. Your cat's immune system is processing the vaccine, which can cause these brief changes in behavior. However, if you notice severe symptoms or if the lethargy persists beyond 48 hours, it's best to consult with a vet for further guidance.
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 should vaccine side effects last in my cat?
Vaccine side effects in cats typically last 24–48 hours. If symptoms persist or worsen, consult a vet.
- When should I be concerned about my cat's reaction to a vaccine?
If your cat exhibits severe symptoms like vomiting, difficulty breathing, or if they collapse, seek immediate veterinary care. Mild symptoms should subside in a few days.
- What should I do if my cat's behavior doesn't return to normal post-vaccination?
If your cat remains sluggish beyond a couple of days or exhibits new symptoms, it's advisable to consult with a veterinarian to ensure everything is okay.
