Prescription sleeping pills such as Ambien, Temazepam, Lunesta etc. always work better and faster in an empty stomach. They will yield lesser effects on a full stomach but you will still digest the drug. It will most likely take longer to kick in because your body will be working on digesting food too. You may have to wait 2 hours but you should still get drowsy and sleep 4-8 hours (depending on dosage and personal tolerance).
Sleeping less than 4 hours effects your liver badly. When you are sleeping your liver has a rest because when you do not sleep your liver is working continuously and fast and a liver performs more than 500 functions a day like detoxifying blood. So when you do not sleep, it badly effects your immune system and heart. So sleep well and proper if you do not want your liver effected.
The duration of The Sleeping Child is 1.58 hours.
The duration of The Sleeping Tiger is 1.48 hours.
The duration of Sleeping with the Enemy is 1.62 hours.
The duration of The Sleeping Cardinal is 1.4 hours.
The duration of The Sleeping Dictionary is 1.82 hours.
The duration of Sleeping Luck is 1.75 hours.
The duration of The Sleeping City is 1.42 hours.
The duration of Sleeping Bride is 1.67 hours.
The duration of While You Were Sleeping is 1.72 hours.
it can. it reacts with gaba receptor similar to benzo's. It can cause a false positive for them