L-Cysteine is beneficial in numerous ways. It is important in detoxification and in the formation of skin, as well as the repair of hair and nail tissue. It is used in producing antioxidants and protects the brain and liver from damage due to the consumption of alcohol, drugs and cigarette smoke. L-Cysteine helps defend against harmful toxins and protects the body from damage caused by radiation. L-Cysteine is effective in building lean muscle tissue since it is a precursor to taurine. When blood glucose levels are low, L-Cysteine is effective for producing energy by converting to glucose. This may help to prevent the breakdown of muscle tissue and enhance endurance in bodybuilding. Other benefits include reducing the effects of aging on the body. It also promotes healing of severe burns, fat burning and helps build muscle. L-Cysteine also promotes the activity of white blood cells. There are numerous other benefits including the effectiveness in treating bronchitis, angina and acute respiratory distress. L-cysteine helps to maintain optimal health and enhances immune system function.