Why is my cat not feeling well after her first vaccine shots?

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.

This can be normal! You can see some vomiting after getting vaccines and given that Faelan only vomited once, I would not be too worried. Plus he sounds like he is otherwise acting normally. I would keep an eye on him and if you see protracted vomiting, diarrhea, signs of an allergic reaction (facial swelling, difficulty breathing, then I would be worried and rush him into an ER vet immediately. I hope this helps!

I'm so sorry that Noushmc isn't feeling well. Pain at the injection site and mild lethargy are very common with vaccinations and considered normal since the vaccination is stimulating the immune system. It usually lasts 1-2 days and will resolve on its own. If Nouschmc is not eating, is vomiting or it lasts more than 2 days, I would contact your veterinarian. Good luck! I hope she feels better soon and that was helpful. Thanks for using Petco Pet Education Center, formerly Petcoach.

This sounds like a side effect of the vaccine, it's not super common but i'v seen a few cases already and this usually resolves within 48-72 hours. your vet could give her pain killers for a couple days if her condition seems to be really bad.

You can see a slight fever and some pain after vaccines, but this should pass in 24-48 hours. If Roxzy still have a fever tomorrow morning and/or is in pain, take him back into the vet. Best of luck.

Some poor appetite can be considered normal after vaccinations. Vaccines stimulate the immune system to help protect your pet from common diseases they could be exposed to. Vaccines can sometimes cause minor changes in appetite or behavior. Usually I tell clients some decrease in appetite and decreased activity can be normal for 24 hours but for any issues lasting more than 24 hours they should call me ASAP. Some of the major issues (although rare) associated with vaccine reactions are trouble breathing and anaphylactic shock. If you notice any trouble breathing, severe lethargy or swelling of the face or at the vaccine site you should contact your veterinarian as soon as possible. If the poor appetite is still an issue after 24 hours or If any other issues are going on contact your veterinarian ASAP.

Hi, Sweet Ginger is looking quite sleepy in the pic. Signs you could still see as a reaction to the cat vaccine are : lethargy (already showing), fever, loss of appetite, vomiting ,diarrhea, Swelling (a lump) and/ redness around the injection site. These signs are short lived around 24-48 hours post vaccination. If you do notice a small lump at the site of the injection that can appears also several days after just monitor it should reduce and disappear in the next few weeks. Hope this helps