2. Adverse effects on ethosuximide: number of participants experiencing each event.
| Event | Callaghan 1982 | Sato 1982 | Martinovic 1983 | Glauser 2013 |
| Drowsiness | 1 | 5 | ||
| Tiredness | 2 | |||
| Nausea | 3 | 2 | 29* | |
| Vomiting | 3 | 29* | ||
| Increased appetite | 6 | |||
| Poor appetite | 1 | 10 | ||
| Diarrhoea | 9 | |||
| Dizziness | 1 | 10 | ||
| Headache | 2 | 23 | ||
| Leukopenia | 3 | |||
| Hiccups | 1 | |||
| Moodiness | 1 | |||
| Hyperactivity | 13 | |||
| Attention problems | 8 | |||
| Hostility | 4 | |||
| Concentration decreased | 6 | |||
| Personality change | 6 | |||
| Sleep problem | 11 | |||
| Depression | 4 | |||
| Slow process speed | 3 | |||
| Memory problem | 0 | |||
| Apathy | 4 | |||
| Fatigue | 26 | |||
| Rash | 6 |
* Nausea, vomiting, or both
Numbers of individuals within each study undertaking ethosuximide: 14 (Callaghan 1982), 23 (Sato 1982), 10 (Martinovic 1983), 154 (Glauser 2013a).