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Adverse events reported by patients. The study included 20 patients who received twice the active lidocaine and twice the placebo drug.
| Lidocaine | Placebo | |
|---|---|---|
| (n = 40) | (n = 40) | |
| Somnolence | 13 | 1 |
| Dry mouth | 5 | 2 |
| Dizziness | 5 | 0 |
| Headache | 3 | 1 |
| Feeling flushed | 2 | 0 |
| Confusion | 1 | 0 |
| Dysarthria | 1 | 0 |
| Tinnitus | 1 | 0 |
