Tacrolimus has been used extensively for immunosuppressive therapy in pediatric liver transplant recipients. However, patients who are exposed to high levels of serum tacrolimus tend to be associated with a higher incidence of significant nephrotoxicity, neurotoxicity, pruritus, alopecia, diabetes and infection. We herein report a child who developed increased serum transaminase levels and liver steatosis as a result of raised trough blood level of tacrolimus (30 ng/ml for 3 days) in association with rotavirus gastroenteritis.