Protein is used to build your body tissue and repair the damaged cell. Muscle, skin, hair, bone and many other tissues is built from protein. This substance is produced in the liver or you can get it from food. When your liver does not work well, protein synthesis is decreased or even stopped.
However, your body tries to compensate the condition by breaking down the muscle. Branched chain amino acid (BCAA) is found in muscle and therefore is used to fulfill the protein requirement. "Muscle" BCAA is broken down into aromatic amino acid (AAA) form, which metabolized only in the liver. AAA accumulation in the brain may indirectly lead to hepatic coma or hepatic encephalopathy. Patients with hepatic encephalopathy require specific nutrients that can help to regain consciousness. The specific nutrient is LOLA (L-ornithine-L-aspartate) whose function is to help detoxify the toxin which is then released through the urine.