COSTUS – LD SYRUP with powerful formulation of Levodropopizine 30mg + Chlorpheniramine maleate 2mg is a peripheral cough suppressant that helps reduce the cough reflex by acting on the respiratory tract without affecting the central nervous system, while Chlorpheniramine Maleate is an antihistamine that relieves allergy symptoms such as sneezing, runny nose, watery eyes, and throat irritation.