The radioprotective effect of the natural complex (milk thistle fruits) biologically active substances on the glucose transport into the everted sacs from the irradiated rats posterity’s small intestine was detected. The data of glucose transport in the small intestine posterity of the sated irradiated rats, which got milk thistle fruits before irradiation, was 2 times as much than in the small intestine posterity of the hungry irradiated rats, in 1.8 time more than in the intact group and 1.6 times — than in the small intestine posterity of the sated irradiated rats without milk thistle fruits.
It was detected the separate effect of water- and lipid-soluble components of the milk thistle fruits in the complex radioprotective effect in vitro: stimulation of glucose transport was obtained only in the presence of the full milk thistle fruits extract or milk thistle fruits oil in the incubation medium — 1.4 and 1.7 times correspondingly.