Why is my cat still throwing up after vaccine and Cerenia shot?

Question

My cat started vomiting after vaccination and health examination including blood test. She vomited in about 1hour after eating or drinking for one day. The vet gave a shot of Cerenia to her but she still threw up within 12 hours,after I fed her with some chicken breast. But this time she threw up some unregistered food which didn’t shown in her vomiting before. I don’t know why Cerenia didn’t work. It’s effect should last for about 24 hrs. And the root cause of vomiting confused me also. Pet's info: Cat | Domestic Shorthair | Female | spayed | 6 lbs

Linda G, MS, DVM · Accepted Answer

Hello. This may have been a vaccine reaction & the Cerenia should have helped. However, we do sometimes need addition anti-nausea medication to get over some of these acute episodes. Often, I will also use Ondansetron if the vomiting persists even with additional use of the Cerenia. Of course, there could be some secondary issue going on & the timing of the vaccinations may have been coincidental. If Jojo continues to vomit, she may need additional Cerenia, & possible some fluids until her body heals. Make sure you stay in touch with your vet in case she does need additional treatment. Thanks for using Petco Pet Education Center, formerly Petcoach.

Why is my cat still throwing up after vaccine and Cerenia shot?

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