Petco Text Logo
Petco Pet Logo
  • Two Easy Ways to Start Earning Rewards!

    rewards header
    Become a member today!
    Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
    Petco Pay LogoBecome a credit card member today!

    Earn 2X Pals Rewards points at Petco
    when you use Petco Pay!

    APPLY NOW
    Learn More About Petco Pay Benefits

My dog's Trazodone for anxiety isn't working. Has he built tolerance?

Updated on September 23rd, 2025

Pet's info: Dog | Yorkshire Terrier | Male | neutered | 3 years and 6 months old | 5.5 lbs

Our 3.5 year old yorkie suffers from terrible anxiety. He is on a quarter of a 100 mg Trazodone tablet a day. We have seen great results for about six months but have noticed him becoming upset again for little or almost no reason. Could he have built up a tolerance?

1 Answer

Most Helpful Answer

Angel Alvarado, LVT

Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on December 6th, 2018

It is possible Petey has built up a tolerance to Trazodone. This can happen if used long term. Discuss an increase with your veterinarian.
Consider also desensitization therapy and a pheromone product, such as the Adaptil collar or DAP plug in diffuser, to further help decrease anxiety.
Vote Icon2Pet Parents found this answer helpful

Smart Picks for Smart Questions

Have A Vet Question?

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

Share

Styled arrow button