"female, 61 with chronic insomnia. been on ambien off and on since 1998. diagnosed with chronic abdominal pain too which impacts my sleep . ambien worked pretty well, but my insurance just stopped paying for it so i am trying out belsomra. took one 10mg tab at 7:30 as directed. went to bed at 10:00; didn&#039;t really feel tired. stared at the ceiling with a headache until 3:00am. took another 10mg tab and finally fell asleep about 3:30. had an extremely vivid nightmare. (i have always dreamed in technicolor and stereophonic sound, but this was over the top.) woke up at 5:00am then fell back asleep and had a normal dream, but then was only in a very light sleep when the alarm went off at 7:00am. will try again tonight with 20mg. the jury is out."