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Mycophenolate mofetil is an important drug in the modern immunosuppressive arsenal. Mycophenolate mofetil is the semisynthetic morpholinoethyl ester of mycophenolate acid. Mycophenolate acid prevents T and B cell proliferation by specifically inhibiting a purine pathway required for lymphocyte division. This paper extensively reviews the experience of mycophenolate mofetil use in liver transplant recipients. In randomised trials, mycophenolate mofetil decreased the rate of acute rejection after liver transplantation, without a significant increase of septic complications. However, so far, there are no data indicating that mycophenolate mofetil increases liver transplant patient or graft survivals. Mycophenolate mofetil is interesting because of its particular side effects profile, which is very different from the other immunosuppressants. The absence of mycophenolate mofetil nephrotoxicity is of specific interest in liver recipients with impairment of renal function. The monitoring of mycophenolate acid area under the concentration time curve might be interesting to limit side effects and provide better clinical efficacy but the exact role of mycophenolate acid monitoring in liver recipients has yet to be further evaluated in large series.