L carnitine reduces ammonia levels and alleviates covert encephalopathy: A randomized trial Full article: Hepatic encephalopathy: experimental drugs in development and therapeutic potential Oral Acetyl L Carnitine treatment in hepatic encephalopathy: view of evidence based medicine Annals of Hepatology Hepatic Encephalopathy: Current and Emerging Treatment Modalities Clinical Gastroenterology and Hepatology