The occurrence of dry mouth is usually related to the decrease of saliva flow. Saliva is mainly produced in parotid gland, submandibular gland and sublingual gland. Normal people produce about 1 ml saliva every minute when they are not stimulated, but when they are stimulated, such as day and night changes, light, sound, smell, body position, smoking, drinking, hunger, fear and so on. Both of them can affect the reduction of saliva, which leads to dry mouth.

Drinking Qixin tea can make your mouth moist. Good reputation.