ArticleBMC veterinary research2025
Evaluation of the effectiveness and adverse events of oxycodone as a pain-relieving agent in 103 dogs with tumors: a retrospective study.
Article in BMC veterinary research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundOxycodone, a semi-synthetic opioid, has been widely used in human medicine for the management of tumor-related pain due to its potent analgesic properties. This study aimed to evaluate the efficacy and safety of oxycodone in managing tumor-related pain in dogs, addressing the current lack of research on effective analgesic options for canine cancer dogs. Medical records of 103 tumor-bearing dogs treated with oxycodone were retrospectively reviewed.
resultsOxycodone demonstrated an analgesic effect ranging from 23.1 to 63.6%, depending on the anatomical origin of the tumor. Improvement was observed in 67.7% of dogs with metastatic lesions. In the monotherapy group, the mean pain relief score increased from 8.73 ± 1.27 before treatment to 9.65 ± 1.53 after administration (p < 0.0001). In the combination therapy group, score rose from 8.75 ± 1.20 to 9.83 ± 1.87 (p = 0.0002). Across the entire canine patient cohort, the mean pain relief score increased from 8.74 ± 1.23 to 9.74 ± 1.70 following treatment (p < 0.0001). Adverse effects included lethargy (n = 6), diarrhea (n = 2), vomiting (n = 1), tachypnea (n = 1), and stargazing (n = 1). All were self-limiting and resolved after discontinuation of the drug. CONCLUSIONS AND CLINICAL IMPORTANCE: Oxycodone demonstrated an overall favorable analgesic profile and could be a well-tolerated and promising pain management solution, both as monotherapy and in combination therapy, for tumor-related pain in dogs, including those with advanced-stage tumors.
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