Inclusion of vitamin-containing soft drink and oil solution of beta-carotene in the diet of the 4-14 years old children suffering from gastrointestinal diseases lead to vitamin and antioxidant status improvement with simultaneous positive effects on their clinical condition. Polyhypovitaminosis frequency had decreased. Thus, there is every reason to fortify diets of the patients suffering from gastrointestinal diseases with vitamins-antioxidants.