Lysozyme Chloride ( Lysozyme HCL ) is a protein naturally occurring in many organisms such as viruses, plants, insects, birds, reptiles and mammals. In mammals, Lysozyme Chloride ( Lysozyme HCL ) has been isolated from nasal secretions, saliva, tears, intestines, urine and milk. One of the sources of Lysozyme Chloride ( Lysozyme HCL ) that is most abundant is chicken egg white.