The effect of fir cell juice on the immunity was studied in Tomsk on the basis of kindergartens, as well as in one of the dental clinics of the city. Against the background of regular administration of cell juice, a reduction of the frequency and duration of acute respiratory viral diseases in children down to 52% compared to the year before the study was observed. Adult patients noted a significant improvement in overall health, an increase of physical and mental performance, a decrease of fatigability.