Costus LS Junior Syrup is a pediatric combination respiratory syrup used for the treatment of wet (productive) cough associated with chest congestion and mucus buildup. It helps in thinning and loosening thick mucus in the airways, relaxing bronchial muscles, and making breathing easier in children.

This formulation contains Ambroxol Hydrochloride, Levosalbutamol, and Guaifenesin, which work together to provide comprehensive relief from cough with phlegm. Ambroxol acts as a mucolytic to break down and thin mucus, Levosalbutamol works as a bronchodilator to relax airway muscles, and Guaifenesin helps in expelling mucus from the respiratory tract.

Costus LS Junior Syrup is commonly prescribed in pediatric respiratory conditions involving cough with mucus and should be used under medical supervision.