Conditions: Back Pain Without Radiation
Allocation: RANDOMIZED | Intervention model: SINGLE_GROUP
Enrollment: 404
Healthy volunteers: no

Brief summary:
The primary purpose of your participation in this study is to help answer the following research question, and not to provide you treatment for your condition--Whether duloxetine once daily can help patients with Chronic Low Back Pain.

Detailed description:

Arms:
arm 1: duloxetine 20 mg once a day (QD), by mouth (PO) for 13 weeks arm 2: duloxetine 30 mg once a day (QD), by mouth (PO) for 1 week then duloxetine 60 mg QD, PO for 12 weeks arm 3: duloxetine 30 mg once a day (QD), by mouth (PO) for 1 week followed by duloxetine 60 mg QD, PO for 1 week, then duloxetine 120 mg QD, PO for 11 weeks arm 4: placebo once a day (QD), by mouth (PO) for 13 weeks

Interventions: intervention 1: Duloxetine intervention 2: Placebo
Intervention descriptions: intervention 1: None intervention 2: None

Protocol document: