2 ambien at once... nada. Only thing that works for me to sleep is benzo's, klonopin really is only mid-length version good for sleep. Valium too long, xanax a bit too short( but I use it when I can). I've had recurrent insomnia for 6 years now, ever since I stopped the anti-seizure meds I was on for 5 years straight before that. My body was still growing then, I think it grew to being used to falling asleep with chemical help. Now, I rarely have 2 normal nights sleep in a row without medication. It sucks, but until a dr. realizes this is a life-long problem, no doc is going to prescribe life-long sleep-aids... so I have the onerous task of finding them myself... NOT very easy as of late.