"i have had insomnia (specific diagnosis is sleep stage dysfunction) for over 4 years. i&#039;ve been on ambien, ambien cr, doxepin, seroquel, trazodone, amitriptyline, restoril, and now belsomra. i have been following belsomra and it&#039;s release for about 2 years now, and could not wait for it&#039;s approval! i&#039;m so disappointed. last night was my first night on the medication, and i had horrible nightmares! i laid awake for hours after i took it, and then fell asleep only to wake up periodically with these horrible nightmares. ambien 10mg worked wonders for me for a while, but then lost its effectiveness as i became more tolerant to the dose. plus, i had severe memory loss on ambien, and i do not want to go back to that phase."