It is used to relieve cough associated with bronchospasm (constriction of airways of lungs) in children. It also provides relief from throat irritation, seasonal allergies and nasal congestion in children and allows them to breathe freely. Mucolite Drops are used to treat wet cough (cough with mucus) in children, especially when associated with an acute sore throat or asthma. They work by thinning and loosening mucus in the airways, making it easier to breathe and cough out the mucus. View Uses, Benefits, and Price of Mucolite Drops at Apollo Pharmacy. Mucolite Drops is a medicine that helps treat wet cough (cough with mucus) associated with an acute sore throat and asthma in children. It also relieves throat irritation, clears congestion, and enables easy breathing in your child. Give Mucolite Drops to your child by mouth with or without food.