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Naphazoline Prescribing Information

Package insert / product label
Generic name: naphazoline hydrochloride
Dosage form: ophthalmic solution
Drug class: Ophthalmic antihistamines and decongestants

Medically reviewed by Last updated on Mar 25, 2024.

Rx only

Naphazoline Description

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:


Chemical Name:

2-(1-naphthylmethyl)-2-imidazole monohydrochloride

Each mL contains:

Active: Naphazoline Hydrochloride 1 mg (0.1%).

Inactives: Boric Acid, Edetate Disodium, Sodium Carbonate, Sodium Chloride and Hydrochloric Acid may be added to adjust pH (5.5 to 7.0), and Water for Injection.

Preservative: Benzalkonium Chloride 0.1 mg (0.01%). Naphazoline Hydrochloride Ophthalmic Solution, USP, 0.1% is a sterile solution with a pH between 5.5 and 7.0.

Naphazoline - Clinical Pharmacology

Naphazoline constricts the vascular system of the conjunctiva. It is presumed that this effect is due to direct stimulation of the drug upon the alpha adrenergic receptors in the arterioles of the conjunctiva resulting in decreased conjunctival congestion. Naphazoline belongs to the imidazoline class of sympathomimetics.

Indications and Usage for Naphazoline

Naphazoline Hydrochloride Ophthalmic Solution is indicated for use as a topical ocular vasoconstrictor.


Contraindicated in the presence of an anatomically narrow angle or in narrow angle glaucoma or in persons who have shown hypersensitivity to any component of this preparation.


Patients under therapy with MAO inhibitors may experience a severe hypertensive crisis if given a sympathomimetic drug. Use in children, especially infants, may result in CNS depression leading to coma and marked reduction in body temperature.


General: For topical ophthalmic use only. Use with caution in presence of hypertension, cardiovascular abnormalities, hyperglycemia (diabetes), hyperthyroidism, infection or injury.

Patient Information: Patients should be advised to discontinue the drug and consult the physician if relief is not obtained within 48 hours of therapy, if irritation, blurring or redness persists or increases, or if symptoms of systemic absorption occur, i.e., dizziness, headache, nausea, decrease in body temperature, or drowsiness.

To prevent contaminating the dropper tip and solution, do not touch any surface, the eyelids or the surrounding area with the dropper tip of the bottle. If solution changes color or becomes cloudy, do not use.

Drug Interactions: Concurrent use of maprotiline or tricyclic antidepressants and naphazoline may also potentiate the pressor effect of naphazoline. Patients under therapy with MAO inhibitors may experience a severe hypertensive crisis if given a sympathomimetic drug. (See WARNINGS).


Pregnancy Category C: Animal reproduction studies have not been conducted with naphazoline. It is also not known whether naphazoline can cause harm when administered to a pregnant women or can affect reproduction capacity. Naphazoline should be given to a pregnant women only if clearly needed.

Nursing Mothers: It is not known whether naphazoline is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when naphazoline is administered to a nursing women.

Pediatric Use: Safety and effectiveness in the pediatric population have not been established. See “WARNINGS” and “CONTRAINDICATIONS”.

Adverse Reactions/Side Effects

Ocular: Mydriasis, increased redness, irritation, discomfort, blurring, punctate keratitis, lacrimation, increased intraocular pressure.

Systemic: Dizziness, headache, nausea, sweating, nervousness, drowsiness, weakness, hypertension, cardiac irregularities, and hyperglycemia.

Naphazoline Dosage and Administration

Instill one or two drops in the conjunctival sac(s) every three to four hours as needed.

How is Naphazoline supplied

Naphazoline Hydrochloride Ophthalmic Solution, USP, is supplied as a sterile 0.1% solution in 15 mL plastic dropper bottles. NDC 17478-216-12

Storage: Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature].

Keep container tightly closed.


Manufactured by: Akorn, Inc.

Lake Forest, IL 60045

GNH00N Rev. 10/16

Principal Display Panel Text for Container Label:

NDC 17478-216-12




Solution, USP


15 mL


Rx only

Principal Display Panel Text for Container Label

Principal Display Panel Text for Carton Label:

NDC 17478-216-12




Solution, USP


15 mL


Rx only Akorn Logo

Principal Display Panel Text for Carton Label
naphazoline hydrochloride solution/ drops
Product Information
Product TypeHUMAN PRESCRIPTION DRUGItem Code (Source)NDC:17478-216
Route of AdministrationOPHTHALMIC
Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
Naphazoline Hydrochloride (UNII: MZ1131787D) (Naphazoline - UNII:H231GF11BV) Naphazoline Hydrochloride1 mg in 1 mL
Inactive Ingredients
Ingredient NameStrength
Boric Acid (UNII: R57ZHV85D4)
Edetate Disodium (UNII: 7FLD91C86K)
Sodium Carbonate (UNII: 45P3261C7T)
Sodium Chloride (UNII: 451W47IQ8X)
Hydrochloric Acid (UNII: QTT17582CB)
Water (UNII: 059QF0KO0R)
Benzalkonium Chloride (UNII: F5UM2KM3W7)
#Item CodePackage DescriptionMarketing Start DateMarketing End Date
1NDC:17478-216-121 in 1 CARTON12/19/1995
115 mL in 1 BOTTLE, DROPPER; Type 0: Not a Combination Product
Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
Labeler - Akorn, Inc. (062649876)
NameAddressID/FEIBusiness Operations
Akorn, Inc.063434679LABEL(17478-216) , PACK(17478-216)
NameAddressID/FEIBusiness Operations
Akorn, Inc.155135783MANUFACTURE(17478-216) , ANALYSIS(17478-216) , STERILIZE(17478-216)