LEEDS, UK: Xerostomia is a prevalent condition especially among older adults, cancer patients and people taking multiple medications. Researchers at the University of Leeds have developed a saliva substitute to alleviate the discomfort of patients suffering from dry mouth. The novel solution mimics natural saliva in its ability to moisten the mouth and serve as a lubricant during food intake. It comes in a dairy and a vegan formulation, and in vitro experiments have found it to be more effective than other commercially available products.