NoLag is an over-the-counter medicine for preventing jetlag. Unfortunately, it is not available until around 2034 CE. It is very effective, but a little hit or miss in its effects.
NoLag consists of two timed effects. The first is a sedative, to allow sleep, following by a stimulant to wake up the user. It is released on a time delay many hours after the sedative. NoLag is undeniably effective, but has been known to cause hallucinatory effects in the particularly sleep-deprived.