alexa Efficacy and safety of combined prolonged-release oxycodone and naloxone in the management of moderate severe chronic non-malignant pain: results of a prospectively designed pooled analysis of two randomised, double-blind clinical trials.
Medicine

Medicine

Journal of General Practice

Author(s): Lwenstein O, Leyendecker P, Lux EA, Blagden M, Simpson KH,

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Abstract BACKGROUND: Two randomised 12-week, double-blind, parallel-group, multicenter studies comparing oxycodone PR/naloxone PR and oxycodone PR alone on symptoms of opioid-induced bowel dysfunction in patients with moderate/severe non-malignant pain have been conducted. METHODS: These studies were prospectively designed to be pooled and the primary outcome measure of the pooled data analysis was to demonstrate non-inferiority in 12-week analgesic efficacy of oxycodone PR/naloxone PR versus oxycodone PR alone. Patients with opioid-induced constipation were switched to oxycodone PR and then randomised to fixed doses of oxycodone PR/naloxone PR (n = 292) or oxycodone PR (n = 295) for 12 weeks (20-80 mg/day). RESULTS: No statistically significant differences in analgesic efficacy were observed for the two treatments (p = 0.3197; non-inferiority p < 0.0001; 95\% CI -0.07, 0.23) and there was no statistically significant difference in frequency of analgesic rescue medication use. Improvements in Bowel Function Index score were observed for oxycodone PR/naloxone PR by Week 1 and at every subsequent time point (-15.1; p < 0.0001; 95\% CI -17.3, -13.0). AE incidence was similar for both groups (61.0\% and 57.3\% of patients with oxycodone PR/naloxone PR and oxycodone PR alone, respectively). CONCLUSIONS: Results of this pooled analysis confirm that oxycodone PR/naloxone PR provides effective analgesia and suggest that oxycodone PR/naloxone PR improves bowel function without compromising analgesic efficacy. TRIAL REGISTRATION NUMBERS: ClinicalTrials.gov identifier: NCT00412100 and NCT00412152.
This article was published in BMC Clin Pharmacol and referenced in Journal of General Practice

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