Tranquilizers of the benzodiazepine group, albeit widely used in clinical practice, are known to exhibit a number of side effects (myorelaxant, sedative, and amnesic) and have a risk of inducing a drug dependence. For this reason, there is continuing search for alternative, more safe tranquilizers producing "soft" anxiolytic action. In particular, some medicinal plants may serve as such tranquilizers. These preparations are usually administered as sedative agents [1], although the question as to whether they also possess a tranquilizer and antidepressant activity requires additional investigation.The purpose of this work was to study the anxiolytic and antidepressant properties and possible side effects of some medicinal herbs occurring in Russia and Mongolia.In this park we have studied the effects of astragalus mongolensis (fabaceous family), allium odoratum (liliaceae family), paeonia anomala (Ranunculaceae family), and patrinia montana (valeriana family). The maximum activity was observed for the plants of astragal; therefore, preparations of this plant were studied in more detail.
EXPERIMENTAL PARTExperiments were performed on a group of white mongrel male rats weighing 200 -250 g.The anxiolytic activity of the medicinal plant preparations was studied using a model of conflict situation (drinking motivation versus electroshock pain irritation) and evaluated by monitoring the number of penalized water takes from a dish at an electric current strength of 0.5 or 1 mA [2,3]. The reference drug was the well-known tranquilizer phenazepam.The antidepressant action of the astmgal preparations was evaluated by measuring the number of turns of a wheel rotated by rats in a swimming pool [4], the test being modified as described in [5]. The effect of the plant preparation was compared to the action of amitriptylin (antidepressant) and caffeine (psychostimulator).