Clinical Research Directory

Inclusion Criteria: * Able to provide consent, with signed and dated informed consent form. * Stated willingness to comply with all study procedures and availability for the duration of the study. * Diagnosis of cirrhosis based on liver biopsy, imaging, or evidence of clinical decompensation. * History of at least one episode of overt Hepatic Encephalopathy (HE) in the last year. * Defined by West Haven Criteria Grades II to IV * Can be precipitated Hepatic Encephalopathy (HE) episode. * Sexually active women of childbearing potential enrolled in the study must agree to use a highly-effective method of contraception (defined in the protocol) for the duration of the study. Exclusion Criteria: * Hospitalization in the last 4 weeks * Current refractory ascites (requiring large volume paracentesis to manage ascites) * Gut-absorbable or intravenous antibiotic therapy in the last 4 weeks (rifaximin is permitted) * Anticipated antibiotics in the coming 4 weeks * Use of lactulose in the last 4 weeks * Alcohol or illicit drug intake in the last 4 weeks * By history * Alcohol use will be characterized as \>1 alcoholic drink / week * History of inflammatory bowel disease * History of primary sclerosing cholangitis * Total bilirubin in the last 3 months \> 4 mg/dL * Prior diagnosis of dementia or other primary neurocognitive disorder * Pregnancy or breast feeding * Placement of a portosystemic shunt or transjugular intrahepatic portosystemic shunt in the last 3 months (permissible if placed \>3 months before enrollment) * Allergy to resistant potato starch