Rhinathiol Promethazine Syrup is used for Bronchiectasis, Allergic disorders, Sneezing, Vomiting, Chronic obstructive pulmonary disease, Nose itching, Eye irritation, Nausea, Motion sickness and other conditions. Rhinathiol Promethazine Syrup may also be used for purposes not listed in this medication guide. Rhinathiol Promethazine Syrup contains Carbocisteine and Promethazine as active ingredients. Rhinathiol Promethazine Syrup works by reducing the viscosity of sputum; blocking histamines or nitrogenous compounds; Rhinathiol Promethazine Syrup is used for the treatment, control, prevention, & improvement of the following diseases, conditions and symptoms: Bronchiectasis Allergic disorders Sneezing Vomiting Chronic obstructive pulmonary disease Nose itching Eye irritation Nausea Motion sickness.