Costus D Junior Cough Syrup is a combination anti-cold and antitussive oral syrup specially formulated for children to provide relief from dry cough, common cold, and allergic respiratory symptoms. It helps suppress cough, reduces nasal congestion, and relieves sneezing and throat irritation for improved respiratory comfort.

This formulation contains Dextromethorphan Hydrobromide 5 mg, Chlorpheniramine Maleate 1 mg, and Phenylephrine Hydrochloride 2.5 mg per 5 ml. Dextromethorphan acts as a cough suppressant by reducing cough reflex activity in the brain, Chlorpheniramine Maleate helps control allergic symptoms such as sneezing and runny nose by blocking histamine, and Phenylephrine Hydrochloride works as a nasal decongestant by reducing swelling in the nasal passages and improving airflow.