Costus AF Syrup is a combination anti-allergic and nasal decongestant oral syrup used for the symptomatic relief of allergy-related cold symptoms and upper respiratory tract discomfort. It helps reduce nasal blockage, runny nose, sneezing, and watery eyes, providing quick relief from allergic and common cold conditions.

This formulation contains Phenylephrine Hydrochloride and Chlorpheniramine Maleate, which work together to relieve nasal congestion and allergic symptoms. Phenylephrine acts as a decongestant by shrinking swollen blood vessels in the nasal passages, while Chlorpheniramine is an antihistamine that blocks the effects of histamine responsible for allergy symptoms.

Costus AF Syrup is commonly used in conditions like allergic rhinitis, cold-related nasal congestion, and seasonal allergies. It should be used under medical supervision for short-term symptomatic relief.