Gabapentin
"I have suffered with insomnia for years and no medications improved my condition until I started using Gabapentin. I have been taking it for 7 days and my quality of sleep has greatly improved. I used to wake up 3-4 times per night and found it hard to fall back asleep. Gabapentin puts me to sleep and I am enjoying deeper, more restful REM stages. I highly recommend it for this condition. I was prescribed this for chronic pain and this is a great bonus. Like the other reviewer it will cause residual grogginess the next day for several hours. Extra caffeine is definitely needed!"