The patients will be allocated to the intervention or control groups by randomization in blocks. The intervention group will receive a synbiotic composition (Lactobacillus acidophilus NCFM SD5221 10bilhões; Lactobacillus rhamnosus HN001 5675 SD 10 billion; Lactobacillus paracasei LPC SD 5275 - 37 10 billion; Bifidobacterium lactis SD 5674 HN0019 10 billion; Fructooligosaccharide 5.5 g) and the control group will receive 6 g of maltodextrin.The patients will received a synbiotic composition or maltodextrin for 15 days, twice times a day, after liver transplantation, when the patients are able to start feeding.