| Purpose | Patients | Evaluations | Perceived Effectiveness |
|---|---|---|---|
| Epilepsy | 105 | 97 | |
| Seizures (grand mal or tonic-clonic) | 42 | 21 | |
| Seizures (complex partial) | 35 | 65 | |
| Major depressive disorder | 9 | 4 | |
| Depressed mood | 8 | 6 |
Common side effects
| Side effect | Patients | Percentage |
|---|---|---|
| Voice changes | 7 | |
| Hoarseness | 4 | |
| Difficulty projecting voice | 3 | |
| Neck pain | 3 | |
| Raspy voice | 3 | |
| Chest pain | 2 |
Side effect severity
| Severity | Evaluations | Percentage |
|---|---|---|
| Severe | 9 | |
| Moderate | 25 | |
| Mild | 57 | |
| None | 48 |