L-Cysteine is a sulphur containing amino acid which has been shown to be involved in the nutritional support of the immune system by helping to cleanse the body of impurities. Cysteine also plays a role in energy metabolism. Like a number of other Amino Acids, it can be used as fuel if necessary; it can be converted into Glucose, which can then be oxidised for energy or stored as Glycogen. Cystein is also a component of hair. Amino Acids are essential to health. Most form the small structural components of protein and are required for the synthesis of protein within the body. The primary function of most Amino Acids is to furnish the essential material for duplication of the genetic code, for cell division, and for the formation of muscles and connective tissue
