So you think alcohol can help you catch some z�s? Not really, even if alcohol acts as a sedative. It does depress the central nervous system but that is also why instead feeling refreshed after waking up from a night of drinking, you get hell. Try a glass of warm milk instead. Milk contains tryptophan which is an amino acid that the body converts to melatonin and serotonin which in turn induce sleep, without a hangover the next day! What more is that milk can easily give you a burst of energy when you wake-up. If I were you, I�d trade that whiskey bottle to the real deal � milk.

Source: Medicine Plus