Abstract
Prevalence of insomnias and other sleep disorders has been growing up in the course of past years. Pharmacology of sleep disorders has always been a complex process that includes behavioral, neurophysiologic, psychological, chronobiological and, not in the least, pharmacological factors.
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 context of nowadays knowledge about neurophysiology and chronobiology of sleep process.