Naphazoline hydrochloride is a medication used primarily as a nasal decongestant. It belongs to the class of drugs known as alpha-adrenergic agonists.Naphazoline hydrochloride works by constricting the blood vessels in the nasal passages, which helps reduce nasal congestion and swelling. It provides temporary relief from symptoms associated with conditions like hay fever, allergies, sinusitis, and the common cold.