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Why is my dog drooling excessively after a buprenorphine shot?

Updated on September 23rd, 2025

Pet's info: Dog | Chihuahua | Female | spayed | 13 years and 10 months old | 7.5 lbs

My 14yrs old chihuahua had a fall and after that, she tilted her head slightly to the side that took the impact of the fall, other than that, she showed no other signs of serious injuries. Worrying for her since it was quite a fall, I rushed her to the vet. The vet said she was having some concussion and pain, thus she was given a shot of Buprenorphine. She had since stopped tilting her head, but she's dripping saliva. Is it normal that after the injection, she drooled for several hours?

1 Answer

Most Helpful Answer

Claudia Fioravanti

Answered By Claudia Fioravanti

Veterinarian

Published on September 5th, 2017

Yes, that is a fairly frequent side effect after buprenorphine injection. The effect of buprenorphine lasts between 6 and 8 hours, so the hypersalivation should gradually wear off. I hope Mifi is pain free and back to her usual self. Please get in touch if you have any further questions.
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