Abstract
The treatment of sleep disorders has always been a complex process that includes behavioral,neurophysiologic, psychological, chronobiological and, not in the least, pharmacological factors (1). Negative influence of different pharmaceuticals use to be very often neglected or underrated.
In reverse, an extent of positive treatment possibilities of pharmacotherapy has been perceived inconsistently very often at present. The simple classification of pharmaceuticals for insomnia into sedatives/hypnotics and stimulants respectively, can't stand up in the contex of nowadays knowledge about neurophysilogy and chronobiology of sleep process.