Disclosed is an agent for preventing a hepatic function disorder or a food, beverage or feed for preventing a hepatic function disorder, which comprises a peptide contained in a cheese and comprising an amino acid sequence depicted in any one of the formulae (1) to (28) as an active ingredient. The peptide has an activity of reducing the cytotoxicity against a hepatocyte, can exhibit its hepatic function disorder-preventing activity at a low dose, and can be ingested on a daily basis.
