Trazodone as an adjunctive agent for pharmacologic treatment of canine anxiety disorders
The objective of the study was to evaluate efficacy of trazodone hydrochloride as an adjunctive treatment for anxiety disorders as well as treatment protocol, dose range, concurrent drug use, adverse events, and therapeutic response in dogs unresponsive to a single agent. This was a retrospective case series using 56 dogs with anxiety disorders treated at a referral veterinary behavior clinic. Medical records of dogs with anxiety disorders adjunctively treated with trazodone were retrospectively evaluated with respect to signalment, primary and secondary behavioral diagnoses, physical examination results, hematologic data (CBC and serum biochemical panel), pharmacologic management, and outcome. Overall, trazodone, used as an adjunctive agent in combination with other behavioral drugs, was well tolerated over a wide dose range and enhanced behavioral calming when administered on a daily or as-needed basis. Although further controlled studies of dose range, efficacy, and safety are needed, trazodone may provide an additional therapeutic option for use in dogs that are unresponsive to conventional treatment.
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