Pain medicine : the official journal of the American Academy of Pain Medicine
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Randomized Controlled Trial Multicenter Study
Maintenance of effect of duloxetine in patients with chronic low back pain: a 41-week uncontrolled, dose-blinded study.
To assess the maintenance of the effect of duloxetine in the treatment of chronic low back pain. ⋯ In this study, the analgesic effect of duloxetine in patients with chronic low back pain was not only maintained for 41 weeks, but additional statistically significant improvement in pain and function was observed.