In extreme conditions like a new situation, bright light, open space, immobilization, height (the open field and lifted cruciform labyrinth test) and a conflict between an unavoidable action and fear of painful mexidol at the doses of 50 and 100 mg/kg of a body weight eliminates anxiety and fear in rats, recovers adequate reactions and the orientative-trying behavior, and lessens aggressiveness. Mexidol extends life span of mice in acute hypoxic conditions. Mexidol is highly competitive with diazepam as an anti-stress agent and excels it as an anti-hypoxic agent; in contrast to diazepam, mexidol does not cause sedation and myorelaxation. Based on these findings, mexidol can be prescribed to humans to maintain efficiency in all kinds of extreme situations.
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