Triazolam or Halcion is considered one of the most powerful controlled sleep medications. Halcion is markedly different from other prescription sleep aids in that it is reserved for very severe cases of sleep-onset insomnia.
Sleep onset insomnia sufferers have problems falling asleep at night and may experience long periods of frustrating and anxious wakefulness before finally sleeping.
Halcion is faster acting than most and provides a much more intense sedative effect. For this reason it is only designed for very short-term use.
Its applicability to those patients with sleep onset insomnia is indicated for its very short half-life.
In other words Halcion or Triazolam kicks in so fast and depletes itself so quickly that it is completely useless for middle of the night insomnia sufferers or those that experience early waking.