In patients with xerostomia with a certain amount of remaining saliva function, as is the case of those with drug induced xerostomia, the use of topical sialogogues can increase saliva flow and alleviate the symptoms. In this regard, the group is researching various therapeutic possibilities in patients with drug induced xerostomia, fundamentally antihypertensives, antidepressants, benzodiacepins, and poly-medicated patients, in general