My mother (age 90) uses zolpidem tartrate to get to sleep (can t fall asleep due to loud heartbeat sound in ear as result of tinnitus) with a 10 mg dose at bedtime and when awakening during the night, an additional 5 mg dose. 5 mg of melatonin has been added at bedtime in an attempt to create drowsiness. It seems as though she is now awakening during the night sneezing and with runny nose, creating a need for zolpidem again to fall asleep. I ve seen no side effects posted inicating this condition, but have you witnessed this?