[Effect of pharmacological agents to prevent the motion sickness syndrome on the cardiovascular system in simulating the early period of adaptation to weightlessness].

The application of pharmacological agents, preventing the motion sickness syndrome in modelling the early stages of adaptation to weightlessness by means of 6-hour antiorthostatic influence (-15 degrees), does not exert a negative action on the human cardiovascular system. The given agents normalize partially cerebral circulation, eliminating changes induced by antiorthostatic influence.