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Questions & Answers

Side Effects & Adverse Reactions

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.

Legal Issues

There is currently no legal information available for this drug.

FDA Safety Alerts

There are currently no FDA safety alerts available for this drug.

Manufacturer Warnings

There is currently no manufacturer warning information available for this drug.

FDA Labeling Changes

There are currently no FDA labeling changes available for this drug.


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


There is currently no drug history available for this drug.

Other Information

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 Structure
Chemical Name:

2-(1-Naphthylmethyl)-2-imidazoline monohydrochloride


Active: naphazoline HCl 1 mg (0.1%). Preservative: benzalkonium chloride 0.1mg (0.01%).
Inactives: Boric acid; edetate disodium; purified water; sodium chloride; sodium carbonate; and hydrochloric acid may be added to adjust the pH (5.5 to 7.0).

Ak-con Manufacturers

  • Rebel Distributors Corp.
    Ak-con (Naphazoline Hydrochloride) Solution [Rebel Distributors Corp.]
  • Preferred Pharmaceuticals, Inc.
    Ak-con (Naphazoline Hydrochloride) Solution/ Drops [Preferred Pharmaceuticals, Inc.]

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