Additional Study Information: The purpose of this study is to evaluate the efficacy of the drug OCR-002 for the treatment of an acute hepatic encephalopathy episode in cirrhotic patients requiring hospitalization. Subjects who have been recently hospitalized will potentially receive OCR-002 via infusion on top of their standard care for 5 days. Patients will be assessed 24-hours after their last infusion and will have a follow-up visit 14 days after the end of the study dug infusion.