Abstract
Brazil is the second country in the world that most performs liver transplants. In Ribeirão Preto, the Hospital das Clínicas of the Ribeirão Preto Medical School of the University of São Paulo (HCFMRP-USP) has already performed more than 480 liver transplants in 20 years of the program. International data have already shown that immunosuppressive drugs, which are used throughout life by t…