Drug-induced liver injury has become the main cause of acute liver failure (ALF). Injury may be dose-dependent or occur idiosyncratically. We report the case of a 37-year-old female patient admitted with grade 4 hepatic encephalopathy. Morosil use was initiated 30 days prior, and after 2 weeks, the case evolved with jaundice and diarrhea interspersed with constipation when the medication was discontinued. Morosil is a dry extract of the juice of red Moro oranges (Citrus species), grown in eastern Sicily (Italy). It is an important source of anthocyanidin pigments, which act as antioxidants and are used in the care and prevention of obesity, insulin resistance, hepatic steatosis, and cardiovascular diseases. According to the clinical picture and tests performed, the diagnosis of ALF was confirmed, by the criteria of Clichy and King’s College. The patient was listed for liver transplantation as a priority, with the model for end stage liver disease (MELD) score: 41. Orthotopic liver transplantation was uneventfully performed using the Piggy-back technique. There are few reports in the literature of acute liver injury by other Citrus species, and we found no case reports of ALF related to the use of Morosil.
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