"took ambien with no problems. doctor wanted me to come off ambien and try belsomra. he gave me samples. took a 10mg dose and it didn&#039;t help me fall asleep or stay asleep. up all night. then- the weird nightmares. i had hours of vivid nightmarish dreams. not good. woke up exhausted. why would anyone take this medication if it&#039;s going to give you nightmares? i&#039;m already an insomniac. i don&#039;t need nightmares and hallucinations too. going back to ambien."