| Purpose | Patients | Evaluations | Perceived Effectiveness |
|---|---|---|---|
| Pain | 2,781 | 1,028 | |
| Fibromyalgia | 1,571 | 650 | |
| Muscle pain | 693 | 244 | |
| Complex regional pain syndrome type I | 249 | 9 | |
| Complex regional pain syndrome type II | 219 | 13 |
Common side effects
| Side effect | Patients | Percentage |
|---|---|---|
| Constipation | 86 | |
| Nausea | 81 | |
| Drowsiness | 80 | |
| Dry mouth | 61 | |
| Dizziness | 50 | |
| Fatigue | 45 |
Side effect severity
| Severity | Evaluations | Percentage |
|---|---|---|
| Severe | 146 | |
| Moderate | 262 | |
| Mild | 459 | |
| None | 831 |