"i&#039;ve had sleep issues for years and after having multiple sleep studies done as well as nasal surgery to fix deviated septum, i tried a dental sleep appliance and a c-pap machine and nothing worked. i was finally given doxepin - omg lifesaver...6 drops per night and i am out like a light wake up around 5 hours later but refreshed and not tired. however, if i go off routine, as in different time-zones, late nights, it does take a while to get back on track...i&#039;d be in a mental health institution if i hadn&#039;t found this as i was at the end of the rope and couldn&#039;t cope anymore being constantly exhausted."