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Why is my dog twitching and restless after recent flea treatment?

Updated On September 23rd, 2025

Pet's info: Dog | Shih Tzu | Male | neutered | 9 years and 11 months old | 20 lbs

our dog has recently started twitching constantly and wants constant attention . Had a new haircut and nails cut about 4 days ago and has received his flea/ tick prevention 3 days ago .

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1 Answer

Most Helpful Answer

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Answered By Destini R. Holloway, DVM

Veterinarian

Published on April 21st, 2019

Poor guy. It sounds like he may be having muscle spasms from the flea prevention, since this is a common side effect seen. I would recommend washing him again to remove the product and then visiting your vet to have him treated for his muscle spasms. A muscle relaxer likely will be recommended as well as any other supportive care meds he needs. I would also make a note to avoid using the flea preventative in the future if this is deemed to be the cause. I hope that your pet Max feels better soon! Best wishes and take care.

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