| Purpose | Patients | Evaluations | Perceived Effectiveness |
|---|---|---|---|
| Huntington's disease | 86 | 2 | |
| Chorea movements | 3 | 1 | |
| Spinal myoclonus | 1 | 2 | |
| Tourette syndrome | 1 | 1 |
Common side effects
| Side effect | Patients | Percentage |
|---|---|---|
| Drowsiness | 1 | |
| Excessive daytime sleepiness (somnolence) | 1 |
Side effect severity
| Severity | Evaluations | Percentage |
|---|---|---|
| Severe | 1 | |
| Moderate | 1 | |
| Mild | 1 | |
| None | 3 |