New products on the market have claimed to alleviate the symptoms of dry mouth and to help the body’s natural defenses reduce the harmful oral bacteria. These products contain the important salivary enzymes lactoperoxidase, lysozyme, lactoferrin and glucose oxidase. Biotene products therefore have the potential to reduce microbial populations which result in radiation caries and periodontal disease and in addition provide relief from the discomfort of xerostomia.