This protocol has been withdrawn as it has been updated and replaced by the new protocol by Stokes CS, Goh ET, Vilstrup H, Morgan MY, Gluud LL. L‐ornithine L‐aspartate for people with cirrhosis and hepatic encephalopathy. Cochrane Database of Systematic Reviews 2016, Issue 10. Art. No.: CD012410. DOI: 10.1002/14651858.CD012410. The review is expected by the end of the 2017.