Menthol Syrup is indicated for allergic conditions, asthma, and cough associated with passive smoking & upper respiratory tract infections. It is known to work by causing bronchodilation and increasing mucociliary clearance. Presence of menthol in this syrup provides a cooling effect in throat whereas guaiphenesin enhances the flow of fluids from glands through its expectorant action. It is highly effective in nature and assures better & faster relief from throat irritation with no adverse effects. Menthol Syrup is also said to have the ability to decrease the viscosity of sputum and increase muckiness. It serves as beta-2 adrenergic agonist hence relaxes bronchial smooth muscles.