Conditions: Pain Osteoarthritis, Knee
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 565
Healthy volunteers: no

Brief summary:
The purpose of this study is to compare the analgesic efficacy and safety of Tramadol Once a Day 100, 200, 300 mg and Placebo

Detailed description:

Arms:
arm 1: None arm 2: None arm 3: None arm 4: None

Interventions: intervention 1: Tramadol Once A Day intervention 2: Placebo
Intervention descriptions: intervention 1: One Tramadol Once A Day tablet at randomized dose daily. intervention 2: One Placebo tablet daily.

Protocol document: