alexa Efficacy of oxycodone paracetamol for patients with bone-cancer pain: a multicenter, randomized, double-blinded, placebo-controlled trial.
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Bioequivalence & Bioavailability

Author(s): Sima L, Fang WX, Wu XM, Li F

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Abstract WHAT IS KNOWN AND OBJECTIVE: Bone-cancer pain is a common and refractory cancer pain. Opioids, on their own, do not control this type of pain well enough, and co-analgesics are necessary. METHODS: Patients with bone metastasis-related pain at Numeric Rating Scale ≥4 were enrolled to this randomized placebo-controlled trial. They had also received morphine or transdermal fentanyl patches for at least 1 week. During the 3-day efficacy phase, patients received placebo or 1-3 tablets of oxycodone/paracetamol (5/325 mg), four times daily for 3 days. All patients kept a daily pain diary. The primary endpoint was the Pain Intensity Difference (PID). Secondary endpoints were cases of breakthrough pain and rescue morphine consumption. Additional analyses included the Short Form-6 Dimensions (SF-6D) quality-of-life scale and a general impression (GI) of patient satisfaction with treatment at the end of the phase. RESULTS AND DISCUSSION: Of the 246 patients in the intent-to-treat set, 89·4\% completed the 3-day efficacy phase. PIDs were 0·9 and 0·3 in the oxycodone/paracetamol and placebo groups respectively, on day 1 (P < 0·001), and 1·5 and 0·3 respectively on day 3 (P < 0·001). Thirty-eight patients in the treatment group, and 58 in the placebo group, suffered breakthrough pain on day 3 (P < 0·001). The SF-6D score decreased to 21·2 ± 2·5 in the oxycodone/paracetamol group at the end of the phase (P = 0·001). In the oxycodone/paracetamol group, 67\% rated GI as good, very good, or excellent. WHAT IS NEW AND CONCLUSION: Patients with bone-cancer pain, already on opioids, obtain clinically important, additional pain-control, with regular oxycodone/paracetamol dosing. © 2011 Blackwell Publishing Ltd. This article was published in J Clin Pharm Ther and referenced in Journal of Bioequivalence & Bioavailability

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