To the Editor: Gabapentin is approved as an anticonvulsant and has also been used to treat chronic pain, restless legs syndrome, bipolar disorder, anxiety disorders (1), and alcohol withdrawal (2). Gabapentin has no known abuse potential, has few side effects, does not require blood monitoring, and does not affect liver metabolism or the excretion of other medications (3). The mechanism of action for gabapentin is unknown. It may influence the synthesis of γ-aminobutyric acid and glutamate (4). These systems are known to modulate anxiety, arousal, and sleep. Gabapentin may also increase deep sleep (stages 3 and 4) by increasing serotonin levels (4). Alcohol-dependent patients commonly complain of insomnia during early recovery, and sleep disturbance has been associated with relapse in alcoholics who are recently abstinent (5).