Petco Text Logo
Petco Pet Logo

Why is my dog anxious and puking after taking Previcox medication?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | spayed | 7 years and 5 months old | 23 lbs

Nala is 23 lb jack russell pig mix. Last week stopped stairs and jumping onto bed. Vet gave 5 days of previcox. Seemed to get better then 3 days in very anxious, hiding, pacing random puking. No resting at all. Much whining. Good spirits though, tail wag.

This question includes photos that may contain sensitive content. Click to view.

View more to consider that the photos may include sensitive content.

1 Answer

Most Helpful Answer

Image profile

Answered By Rodrigo Roca, DVM

Veterinarian

Published on October 28th, 2018

Hello, I am sorry to hear about Nala. Previcox is a nonsteroidal anti-inflammatory (NSAID) medication used for injuries like the one you described. Possible side effects of NSAIDs include gastrointestinal side effects, such as ulcers in the stomach and harm to the kidneys. Dogs are more likely to experience these side effects if the medication is given on an empty stomach or for long periods of time.. Some dogs are also just more sensitive to these side effects in general. The dark color of Nala's vomit is concerning, and I would be worried that she may be experiencing some of the side effects of Previcox. I would recommend having her evaluated by a veterinarian so that they can examine her and prescribe medications to help with potential gastric ulcers. Hope this helps, good luck!

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored