"i&#039;ve been taking ambien for years now. it began losing its effectiveness sometime ago. i can usually fall asleep after taking it, but now only sleep a few hours and can&#039;t get back to sleep. i started with 10 mg of belsomra at midnight and it did not allow me to fall asleep. at 2:30, i took another 10 mg. i did wake a few times. with ambien that would have been it for me. i would have been up the rest of the night. with 20 mg of belsombra i easily fell back asleep. i did not experience any bad dreams. if fact, quite the opposite. the sleep was heavenly and i didn&#039;t want to wake up. it was the best sleep i&#039;ve had in years. because i didn&#039;t get to sleep until 3 am, i slept until noon. i hope i can regulate this in the future. cost is worrisome"