Effectiveness of gabapentin
| n | % | |
| Overall response to gabapentin | ||
| Deteriorated | 1 | 2 |
| None | 8 | 19 |
| Minimal | 7 | 17 |
| Good | 10 | 24 |
| Very good | 15 | 36 |
| Not documented | 1 | 2 |
| Change in irritability | ||
| Yes | 30 | 71 |
| No | 11 | 26 |
| Not documented | 1 | 2 |
| Pain reduction | ||
| Yes | 17 | 40 |
| No | 23 | 55 |
| Not documented | 2 | 5 |
| Adverse effects | ||
| None | 31 | 74 |
| Improvement reducing over time | 4 | 10 |
| Lethargy | 3 | 7 |
| Twitching | 1 | 2 |
| Alopecia | 1 | 2 |
| Vomiting | 1 | 2 |
| Elevated liver enzymes | 1 | 2 |
| Gabapentin discontinued | 15 | 36 |
| Of them | ||
| Alopecia | 1 | 7 |
| Asymptomatic | 1 | 7 |
| No improvement | 1 | 7 |
| Changed to pregabalin | 12 | 80 |