BioXtra Dry Mouth Gel Mouthspray 50ml BioXtra Dry Mouth Gel Mouthspray is a saliva substitute that instantly relieves the discomfort of oral dryness by moisturising lips, tongue and gums and helping to encourage the flow of natural moisture. It contains minerals and enzymes similar to those in saliva and supplements the saliva's defense mechanisms, which is important for oral health. BioXtra Dry Mouth Gel Mouthspray is unflavoured and is midly sweetened with xylitol. The mouthspray is a convenient and practical format for use during the day, even when out and about. Used daily, the advanced formulation in BioXtra products gently eases the sensations of dry mouth, helps reduce unwanted bacteria and leaves your mouth feeling fresh and comfortable, day and night.