Antazol 0.1% Nasal Drop is a topical nasal decongestant containing Xylometazoline Hydrochloride, a sympathomimetic agent with marked alpha-adrenergic activity. It constricts the nasal blood vessels, thereby decongesting the mucosa of the nose and neighboring regions of the pharynx. This action facilitates easier breathing for individuals suffering from nasal congestion due to various conditions.