This study aimed to study the effects of probiotics on liver and kidney function parameters. An in vitro study was used to identify food-grade probiotics for human consumption. As far as probiotic strains used, B. longum subspecies infantis, L. acidophilus, as well as B. bifidum are all GRAS (Generally Recognized as Safe). Over the course of six months, 100 patients with CKD and Liver disease 50 patients were without treatment and 50 patients were given two capsules each morning and evening containing 2.5*109 CFU B. longum subspecies infantis, L. acidophilus, as well as B. bifidum at a ratio of 1:1:1, and 50 normal indivisuals were used in this study. Pre-test nutritionists recommended the participants to eat low-protein diets and to avoid any lifestyle or dietary changes throughout the experiment time. Blood was collected for evaluation of AST, ALT, Total protein, Urea, and creatinine levels in both patients and normal. These kits were obtained from Biolabo company, these were done according to company instructions. The results showed that the probiotics had a therapeutics effect which causes a significant difference in all parameters in treated patients as compared with patients that were not treated. In conclusion, Probiotics have therapeutic effects on the injured kidney and the liver, which are indicated by decreasing the liver and kidney functions.