"some nights after taking the zolpidem i go right to sleep, and have sound, restful sleep for about 2-4hrs. twice during my current bout of insomnia i have slept a full 10hrs after taking the zolpidem. i have had some positive experience, and some negative. however, i have bouts of insomnia once or twice a year; the past zolpidem is worked really well, within few nights. i am not on week four of the insomnia, and three on the zolpidem. i am working closely with my doctor."