Medical Author: John P. Cunha, DO, FACOEP Last updated on RxList: 1/10/2022
Drug Description

What is Flarex and how is it used?

Flarex is a prescription medicine used to treat the symptoms of Ocular Inflammation. Flarex may be used alone or with other medications.

Flarex belongs to a class of drugs called Antivirals, Ophthalmic; Corticosteroids, Ophthalmic.

It is not known if Flarex is safe and effective in children younger than 2 years of age.

What are the possible side effects of Flarex?

Flarex may cause serious side effects including:

  • hives,
  • difficulty breathing,
  • swelling of your face, lips, tongue, or throat,
  • pain behind your eyes,
  • sudden vision changes,
  • slow healing after your eye surgery,
  • eye pain,
  • tunnel vision,
  • seeing halos around lights,
  • signs of new eye infection, and
  • crusting, draining or swelling of your eyes

Get medical help right away, if you have any of the symptoms listed above.

The most common side effects of Flarex include:

  • mild stinging or burning in your eyes,
  • feeling like something is in your eye,
  • red or puffy eyelids,
  • blurred vision, and
  • drooping eyelids

Tell the doctor if you have any side effect that bothers you or that does not go away.

These are not all the possible side effects of Flarex. For more information, ask your doctor or pharmacist.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


FLAREX® (fluorometholone acetate ophthalmic suspension) is a corticosteroid prepared as a sterile topical ophthalmic suspension. The active ingredient, fluorometholone acetate, is a white to creamy white powder with an empirical formula of C24H31FO5 and a molecular weight of 418.5. Its chemical name is 9-fluoro-11β, 17-dihydroxy-6α -methylpregna-1, 4-diene-3, 20-dione 17- acetate. The chemical structure of Fluorometholone Acetate is presented below:

FLAREX® (fluorometholone acetate ophthalmic suspension) Structural Formula Illustration

Each mL Contains

Active:fluorometholone acetate 1 mg (0.1%). Preservative:benzalkonium chloride 0.01%. Inactives :sodium chloride, monobasic sodium phosphate, edetate disodium, hydroxyethyl cellulose, tyloxapol, hydrochloric acid and/or sodium hydroxide (to adjust pH), and purified water. The pH of the suspension is approximately 7.3, with an osmolality of approximately 300 mOsm/kg.

Indications & Dosage

3 pharmacies near 20147 have coupons for Flarex (Brand Names:Flarex Sterile Ophthalmic Suspension for 3.5GM of 0.1%)

Harris Teeter Pharmacy
Harris Teeter Pharmacy

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with free coupon

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CVS Pharmacy
CVS Pharmacy

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with free coupon

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with free coupon

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FLAREX (fluorometholone acetate ophthalmic suspension) is indicated for use in the treatment of steroid responsive inflammatory conditions of the palpebral and bulbar conjunctiva, cornea, and anterior segment of the eye.


Shake Well Before Using

One to two drops instilled into the conjunctival sac(s) four times daily. During the initial 24 to 48 hours the dosage may be safely increased to two drops every two hours. If no improvement after two weeks, consult physician. Care should be taken not to discontinue therapy prematurely.


FLAREX (fluorometholone acetate ophthalmic suspension) is supplied in whitex low density polyethylene (LDPE) bottles, with natural LDPE dispensing plugs and pink polypropylene closures. The product is supplied as 5mL in an 8 mL bottle.

5 mL: NDC 0065-0096-05


Store upright between 2°C -25°C (36°F -77°F).

Protect from freezing.

Distributed by: ALCON LABORATORIES, INC. Fort Worth, Texas 76134 USA. Revised: March 2017


Pink Eye (Conjunctivitis) Symptoms, Causes, Treatments See Slideshow
Side Effects & Drug Interactions


Glaucoma with optic nerve damage, visual acuity and field defects, cataract formation, secondary ocular infection following suppression of host response, and perforation of the globe may occur.

Postmarketing Experience

The following reaction has been identified during post-marketing use of FLAREX® (fluorometholone acetate ophthalmic suspension) in clinical practice. Because reactions are reported voluntarily from a population of unknown size, estimates of frequency cannot be made. The reaction, which has been chosen for inclusion due to either its seriousness, frequency of reporting, possible causal connection to FLAREX, or a combination of these factors, includes: dysgeusia.


No Information Provided



FOR TOPICAL OPHTHALMIC USE ONLY. NOT FOR INJECTION. Use in the treatment of herpes simplex infection requires great caution. Prolonged use may result in glaucoma, damage to the optic nerve, defect in visual acuity and visual field, cataract formation and/or may aid in the establishment of secondary ocular infections from pathogens due to suppression of host response. Acute purulent infections of the eye may be masked or exacerbated by presence of steroid medication. Topical ophthalmic corticosteroids may slow corneal wound healing. In those diseases causing thinning of the cornea or sclera, perforation has been known to occur with chronic use of topical steroids. It is advisable that the intraocular pressure be checked frequently.




Fungal infections of the cornea are particularly prone to develop coincidentally with longterm local steroid application. Fungus invasion must be considered in any persistent corneal ulceration where a steroid has been used or is in use.

Carcinogenesis, Mutagenesis, Impairment Of Fertility

No studies have been conducted in animals or in humans to evaluate the possibility of these effects with fluorometholone.


Fluorometholone has been shown to be embryocidal and teratogenic in rabbits when administered at low multiples of the human ocular dose. Fluorometholone was applied ocularly to rabbits daily on days 6-18 of gestation, and dose-related fetal loss and fetal abnormalities including cleft palate, deformed rib cage, anomalous limbs and neural abnormalities such as encephalocele, craniorachischisis, and spina bifida were observed. There are no adequate and well controlled studies of fluorometholone in pregnant women, and it is not known whether fluorometholone can cause fetal harm when administered to a pregnant woman. Fluorometholone should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

Nursing Mothers

Systemically administered corticosteroids appear in human milk and could suppress growth, interfere with endogenous corticosteroid production, or cause other untoward effects. It is not known whether topical administration of corticosteroids could result in sufficient systemic absorption to produce detectable quantities in human milk. Because many drugs are excreted in human milk, caution should be exercised when FLAREX (fluorometholone acetate ophthalmic suspension), is administered to a nursing woman.

Pediatric Use

Safety and effectiveness in pediatric patients have not been established.

Geriatric Use

No overall differences in safety or effectiveness have been observed between elderly and younger patients.

Overdosage & Contraindications


No Information Provided


Contraindicated in acute superficial herpes simplex keratitis, vaccinia, varicella, and most other viral diseases of cornea and conjunctiva; mycobacterial infection of the eye; fungal diseases; acute purulent untreated infections, which like other diseases caused by microorganisms, may be masked or enhanced by the presence of the steroid; and in those persons who have known hypersensitivity to any component of this preparation.

Clinical Pharmacology


Corticosteroids suppress the inflammatory response to inciting agents of mechanical, chemical or immunological nature. No generally accepted explanation of this steroid property has been advanced. Corticosteroids cause a rise in intraocular pressure in susceptible individuals. In a small study, FLAREX (fluorometholone acetate ophthalmic suspension) demonstrated a significantly longer average time to produce a rise in intraocular pressure than did dexamethasone phosphate; however, the ultimate magnitude of the rise was equivalent for both drugs and in a small percentage of individuals a significant rise in intraocular pressure occurred within three days.

Medication Guide


Do not touch dropper tip to any surface, as this may contaminate the suspension. The preservative in FLAREX® (fluorometholone acetate ophthalmic suspension), benzalkonium chloride, may be absorbed by soft contact lenses. Contact lenses should be removed during instillation of FLAREX (fluorometholone acetate ophthalmic suspension) but may be reinserted 15 minutes after instillation.

Patients should be advised that their vision may be temporarily blurred following dosing with FLAREX (fluorometholone acetate ophthalmic suspension). Care should be exercised in operating machinery or driving a motor vehicle.

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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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