Pharmaceutical preparations in the nature of artificial saliva for treating xerostomia, dry mouth, and mucositis; pharmaceutical preparations in the nature of oral care rinses for treating xerostomia, dry mouth, and mucositis; medicated oral rinses; medicated oral rinses for treating xerostomia; powdered pharmaceutical preparations in the nature of oral rinse mix for treating xerostomia, dry mouth, and mucositis; powdered pharmaceutical preparations in the nature of oral rinse mix containing ...