A gentle gel that soothes and protects. If you have dry mouth, it's important to protect your mouth from odour-causing bacteria, as well as to enjoy relief from the symptoms. Oral Balance gel helps to deliver long-lasting relief to a dry and irritated mouth. Biotène Oral Balance Moisturising Gel: Is easy to use. Is pleasant tasting. Provides lasting relief. Can be used with moderate to severe cases of dry mouth.