A clinical study was made of rate of elimination of radiocaesium in 137 adult subjects and 4700 children residing in the territory affected by radioactive contamination caused by the Chernobyl accident, undergoing rehabilitative treatment at the Truskavets health resort. A complex of therapeutic measures involving the use of the mineral water "Naftusia" containing few mineral substances, and, in addition, enterosorbents (Silard-P, Enterosgel, Ferrocin), the concentrated product "Vin-Vita" were associated with moderate stimulation of elimination of 137Cs from the organism. Supplementary ferrocin over six days had the best effect in the above series, with the activity of radiocaesium having been decreased by 40% whereas a complex of therapeutic measures over 20 days with no such supplement led to 17% reduction in 137Cs. It is suggested that ferrocin be included into the complex of therapeutic measures designed to eliminate 137Cs from the organism.