The aim of this study was to investigate the effect of probiotic strains of Lactobacillus casei IMV B-7280, Bifidobacterium animalis VKL, B. animalis VKB on the pro-and anti-inflammatory cytokines production in Wistar male rats with monosodium glutamate (MSG)-induced obesity. It was established that neonatal administration of MSG to rats leads to increasing levels of the interleukin (IL)-1β and IL-12, and to decreasing of the IL-4, IL-10 and tumor growth factor (TGF)-β levels in the blood serum. After administration of the B. animalis VKL -B. animalis VKB -L. casei IMV B-7280 composition to obese rats the level of the IL-1β in blood serum wasn't differ from that in the obese rats, that didn't receive of the probiotic bacteria. But there was no statistically significant difference comparing with intact rats. The level of the IL-12B p40 in blood serum was decreased under influence of the B. animalis VKL -B. animalis VKB -L. casei IMV B-7280 composition (18.9 %, p < 0.05) and B. animalis VKL (10.5 %, p < 0.05) compared with obese rats, not receiving probiotic bacteria, but remained higher than in intact animals. After administration to obese rats of the B. animalis VKL -B. animalis VKB -L. casei IMV B-7280 composition the levels of the IL-4, IL-