Journal of opioid management
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Randomized Controlled Trial Multicenter Study Clinical Trial
Tolerability and efficacy of two synergistic ratios of oral morphine and oxycodone combinations versus morphine in patients with chronic noncancer pain.
Analgesic synergy and improved tolerability have been reported for flexible dose morphine and oxycodone combinations. This report describes two studies with similar double-blind, randomized, 7-day crossover designs (up to 7 days per arm) conducted to 1) explore the analgesic and safety benefit offixed ratio of morphine (M) and oxycodone (0) combinations (MOX) and 2) define the optimal ratio for morphine and oxycodone combination. ⋯ A 3:2 or 1:2 fixed ratio combination of morphine and oxycodone (MOX) produced analgesic synergy and a tolerability profile improvement in patients with chronic noncancer pain.