“…The prevalence of dry mouth increases with age and affects approximately 30% of the population aged 65 years and older . Additionally, in elderly people, it can be a side‐effect of co‐existing medical disorders, such as DM, Sjögren's syndrome, HIV/AIDS, Alzheimer's disease, anemia, cystic fibrosis, rheumatoid arthritis, hypertension, Parkinson's disease, stroke, and mumps …”