Judging by the time course of the pulse pressure, prescribing Rhodiola promoted an improvement in the respondent reaction of the blood circulatory apparatus to the physical load. No side effects were observed: palpitations, sleep disturbances, loss of appetite, etc. All the preparations studied improved stamina and recovery, but their degree of effectiveness differed. Under the influence of Rhodiola rosea extract, the volume of repeat work performed increased by 28%, whereas without baseline fatigue, the increase in the duration of work was about 12%. These data indicate that Rhodiola rosea, like other adaptogens, promotes recovery from fatigue more than it increases the initial levels of stamina.