(naphazoline hydrochloride ophthalmic solution, USP) 0.1%
Naphazoline hydrochloride, an ocular vasoconstrictor, is an imidazoline derivative sympathomimetic amine. It occurs as a white, odorless crystalline powder having a bitter taste and is freely soluble in water and in alcohol. The active ingredient is represented by the structural formula:
Active: naphazoline HCl 0.1%. Preservative: benzalkonium chloride 0.004%.
Inactives: citric acid, monohydrate; edetate disodium; polyvinyl alcohol 1.4%; purified water; sodium chloride; sodium citrate, dihydrate; and sodium hydroxide to adjust the pH. It has a shelf life pH range of 5.5 to 6.5.