"i have been taking ambien every night for a over 20 years. i am a nurse and it&#039;s very difficult to work swing shift and teach yourself to sleep whenever ..esp if you suffer from insomnia. i have had insomnia since a child, probably sleep walking. sleep eating prior to taking the medicine. now that i have it ..my life has improved 200 percent .no one can imaging how disturbing it is to lie in bed for 8 hours wide awake ...knowing you have work soon. when i first took it, i was groggy in the morning ..but now as long as i get 8 hours i wake up feeling awake and amazing ..never grew a tolerance for it. always works. i will say when i had children under 5 ..i would never take it ...not safe ..when you are caring for others .this med saved me."