Hello, Welcome to Health Care Magic. I read carefully your query and I understand your concern. You had a transplant liver, ammonia is the product of bacterial activity on protein in intestine and then it is absorbed and transported to the liver and the liver degrades into end products and waste products, having a liver disease cause the high level of ammonium in blood. The component of the production of ammonia are diet protein and bacterial flora of the intestine, so you should reduce the protein intake through your diet and specially you should avoid the intake of cheese, peanut butter ,onion, mayonnaise ,ketchup etc. The other component is the bacterial flora in intestine, for this you can take Lactulose that is a laxative that alters bacterial flora and makes fewer organisms available to produce ammonium, and you take it, you can use with or without the Lactulose antibiotics e.g. Neomicin take from oral rout induce the reduction of ammonia production by the intestinal bacterial flora. Except the diet and medication to keep reduced the ammonium blood level you should take a healthy diet and have a healthy lifestyle to keep healthy the liver and this include a healthy weigh that avoid complications e.g. high blood pressure, so you should: eat five serving of fruits and vegetable every day; eat lean meat; eat whole grain breads; increase the fiber in your diet; drink low-fat dairy products; keep a low salt and low fat diet; avoid alcohol intake; staying hydrated and avoid grapefruit because of their effects on the immunosuppressant drugs that you take to maintain the transplant liver. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Kind regard, Dr .Marsida Janko