To assess the tolerance of tableted green tea and its effect on the antioxidant status indices. Twenty-five patients with different gastrointestinal pathology weere included in the study and divided into main and control groups. The tolerance of tableted green tea was good in main group patients. This group showed better dynamics of quality of life indices, especially in scales of body pain and social functioning. There were no significant differences in biochemical analysis of both groups--it can indicate on safety of this product. Analysis revealed that main group patients show decreased level of all antioxidant status indices, it is reflected in decreasing of the lipid peroxidation index from 4.63 to 4.14 (p<0.05).