A Study Comparing the Effectiveness and Safety of Extended-release Tramadol Versus Placebo in the Treatment of Chronic Low Back Pain

Summary

The purpose of this study is to compare the analgesic efficacy of oral, once-daily tramadol ER 300 mg and 200 mg to placebo in patients with moderate to severe chronic low back pain requiring daily analgesic treatment. The study hypothesis is that tramadol ER is effective in the treatment of moderate to severe chronic low back pain.

Timeline

Start

2000-11

Primary completion

—

Completion

2001-11

Drugs

Indications