My kitten is drowsy and shaking after vaccinations. Is this normal?
It can be normal for kittens to be somewhat tired and sore after vaccination, just like human children. Some may run a low-grade fever and not eat well for the first day or so after their shots. What is NOT normal would be any of the following symptoms: repeated vomiting, pale gums, difficulty breathing, or collapse/extreme weakness - these are signs of a serious allergic reaction. This is very rare following vaccination, but if it occurs it can be life-threatening - so if you observe any of these signs, make sure to get your kitten to the vet right away. If she is just tired and sore, it should be fine to monitor her at home - she should be feeling better within the next 24-48 hours.
Updated on September 23rd, 2025