vasoconstrictor (trade names Privine and Sudafed) used in nasal sprays to treat symptoms of nasal congestion and in eyedrops to treat eye irritation

Naphazoline (in the hydrochloride form) is the common name for 2-(1-Naphthylmethyl)-2-imidazoline hydrochloride, an α-adrenergic agonist that functions as a decongestant and vasoconstrictor. It commonly used in over-the-counter and prescription eye drops, to eliminate redness and inflammation. It is an active ingredient in Naphcon-A.