Reducing ALT or AST level is not possible in most cases, as elevated ALT levels normally indicate liver damage and elevated AST levels indicate tissue damage or damage to an organ such as the brain or heart, states WebMD. AST generally decreases on its own after injury, within days.
ALT and AST testing are commonly done together, as both tests are reliable tests to diagnose liver damage, according to WebMD. An ALT or AST test is done to check for liver issues such as hepatitis or cirrhosis of the liver, which may be caused by alcohol use, drug use or specific viruses. ALT and AST testing also indicates whether jaundice is caused by a liver disease or a blood disorder. ALT and AST testing are also done to monitor patients who take medication that may damage the liver.
There are many medications and herbal supplements that negatively interact with ALT testing, according to American Academy of Physicians. This is why it is extremely important to list all medications or herbal supplements on medical questionnaires. Some herbal supplements or vitamins that interact with ALT testing are shark cartilage, kava, Vitamin A and ephedra. Some common medications that affect ALT testing include acetaminophen, fluconazole, heparin and protease inhibitors.