09/24/2026
Is trazodone really an anxiety medication?
Veterinarians often prescribe trazodone before vet visits because it can make dogs easier to handle and may reduce signs of fear and stress.
But “calmer” is more complicated than it looks.
Trazodone is a SARI: a serotonin antagonist and reuptake inhibitor. In people, its effects are dose-dependent. Lower doses tend to produce more sedation and sleepiness, while higher doses more strongly inhibit the serotonin transporter, a mechanism associated with anxiolysis.
That matters because we often judge trazodone by what we can see:
The dog lies down.
They move less.
They struggle less.
They seem sleepy.
Those changes can be useful, but they do not necessarily tell us how much anxiety has changed.
Research suggests trazodone can reduce some signs of stress in dogs, including during veterinary visits. However, many studies do not clearly separate sedation, “calming,” and true anxiety relief.
Some dogs also show increased excitement or behavioral disinhibition. One possibility is that a dog may feel sedated or uncoordinated while still feeling afraid. That combination can be uncomfortable.
Trazodone also produces a metabolite called mCPP, which can provoke anxiety in people. We do not yet know how clinically important that is in dogs.
None of this means trazodone is a bad medication or that it cannot help anxiety. It means we should be careful about what we call success.
If your dog takes trazodone:
• Keep using gentle handling, space, choice, and environmental changes.
• Do not assume sleepiness means anxiety is controlled.
• Watch for agitation, restlessness, excessive sedation, poor coordination, or worsening behavior.
• Talk with your veterinarian if the response is not what you expected.
Medication should support low-stress handling and good veterinary care, not replace them.
