Woman and Man
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Extract
The primary objective is to evaluate the effectiveness, safety, and tolerability of increasing doses of tapentadol PR (300 mg per day after run-in, up-titration to 500 mg per day) versus a combination of tapentadol PR (300 mg per day after run-in) and pregabalin (titrated to 300 mg per day) in subjects requiring additional analgesia after titration to tapentadol PR 300 mg per day.
Inclusion criteria
- severe chronic low back pain with a neuropathic pain component