MAXITROL (neomycin and polymyxin B sulfates and dexamethasone ophthalmic suspension) is a multiple dose anti-infective steroid combination in sterile suspension form for topical application. The chemical structure for the active ingredient, dexamethasone, is:

Established name: dexamethasone

Chemical name: pregna-1, 4-diene-3, 20-dione, 9-fluoro-11, 17, 21-trihydroxy-16-methyl-, (11β, 16α)-. MW = 392.45

The other active ingredients are neomycin sulfate and polymyxin B sulfate. The structural formula for neomycin sulfate is:

The structural formula for polymyxin B sulfate is:

[structure]

Each mL contains: Actives: neomycin sulfate equivalent to neomycin 3.5 mg, polymyxin B sulfate 10,000 units, dexamethasone 0.1 %. Inactives: hypromellose 2910 0.5%, sodium chloride, polysorbate 20, hydrochloric acid and/or sodium hydroxide (to adjust pH), purified water, benzalkonium chloride 0.004% (preservative).

Last updated on RxList: 8/27/2008

For steroid-responsive inflammatory ocular conditions for which a corticosteroid is indicated and where bacterial infection or a risk of bacterial ocular infection exists.

Ocular corticosteroids are indicated in inflammatory conditions of the palpebral and bulbar conjunctiva, cornea, and anterior segment of the globe where the inherent risk of corticosteroids use in certain infective conjunctivitides is accepted to obtain a diminution in edema and inflammation. They are also indicated in chronic anterior uveitis and corneal injury from chemical, radiation or thermal burns; or penetration of foreign bodies.

The use of a combination drug with an anti-infective component is indicated where the risk of infection is high or where there is an expectation that potentially dangerous numbers of bacteria will be present in the eye.

The particular anti-infective drug in this product is active against the following common bacterial eye pathogens: Staphylococcus aureus, Escherichia coli, Haemophilus influenzae, Klebsiella/Enterobacterspecies, Neisseriaspecies, and Pseudomonas aeruginosa.

This product does not provide adequate coverage against: Serratia marcescens and streptococci, including Streptococcus pneumoniae.

One to two drops in the conjunctival sac(s). In severe disease, drops may be used hourly, being tapered to discontinuation as the inflammation subsides. In mild disease, drops may be used up to four to six times daily.

Not more than 20 mL should be prescribed initially and the prescription should not be refilled without further evaluation as outlined in PRECAUTIONS above.

FOR TOPICAL OPHTHALMIC USE ONLY.

MAXITROL (neomycin and polymyxin B sulfates and dexamethasone ophthalmic suspension) is supplied as a sterile ophthalmic suspension in a white, low density polyetheylene DROP-TAINER dispenser with a pink polypropylene cap.

STORAGE: Store upright at 8°- 27°C (46°- 80°F).

Revised: December 2007. ALCON LABORATORIES, INC, Fort Worth, Texas 76134. FDA Rev date: 04/24/08

Last updated on RxList: 8/27/2008

Adverse reactions have occurred with corticosteroid/anti-infective combination drugs which can be attributed to the corticosteroid component, the anti-infective component, or the combination. Exact incidence figures are not available since no denominator of treated patients is available.

Reactions occurring most often from the presence of the anti-infective ingredient are allergic sensitizations. The reactions due to the corticosteroid component are: elevation of intraocular pressure (IOP) with possible development of glaucoma, and infrequent optic nerve damage; posterior subcapsular cataract formation; and delayed wound healing.

Corticosteroid-containing preparations have also been reported to cause perforation of the globe. Keratitis, conjunctivitis, corneal ulcers, and conjunctival hyperemia have occasionally been reported following local use of steroids.

No information provided.

Last updated on RxList: 8/27/2008

Prolonged use of corticosteroids may result in glaucoma with damage to the optic nerve, defects in visual acuity and fields of vision, and in posterior subcapsular cataract formation. Prolonged use may also suppress the host immune response and thus increase the hazard of secondary ocular infections.

Various ocular diseases and long-term use of topical corticosteroids have been known to cause corneal and scleral thinning. Use of topical corticosteroids in the presence of thin corneal or scleral tissue may lead to perforation.

Acute purulent infections of the eye may be masked or activity enhanced by the presence of corticosteroid medication.

If this product is used for 10 days or longer, intraocular pressure should be routinely monitored even though it may be difficult in children and uncooperative patients. Steroids should be used with caution in the presence of glaucoma. Intraocular pressure should be checked frequently.

The use of steroids after cataract surgery may delay healing and increase the incidence of bleb formation.

Use of ocular steroids may prolong the course and may exacerbate the severity of many viral infections of the eye (including herpes simplex). Employment of a corticosteroid medication in the treatment of patients with a history of herpes simplex requires great caution; frequent slit lamp microscopy is recommended.

MAXITROL (neomycin and polymyxin B sulfates and dexamethasone ophthalmic suspension) is not for injection. It should never be injected subconjunctivally, nor should it be directly introduced into the anterior chamber of the eye.

Products containing neomycin sulfate may cause cutaneous sensitization.

General: The initial prescription and renewal of the medication order beyond 20 milliliters of MAXITROL (neomycin and polymyxin B sulfates and dexamethasone ophthalmic suspension) should be made by a physician only after examination of the patient with the aid of magnification, such as slit lamp biomicroscopy and, where appropriate, fluorescein staining. If signs and symptoms fail to improve after two days, the patient should be re-evaluated.

As fungal infections of the cornea are particularly prone to develop coincidentally with long-term local corticosteroid applications, fungal invasion should be suspected in any persistent corneal ulceration where a corticosteroid has been used or is in use. Fungal cultures should be taken when appropriate.

If this product is used for 10 days or longer, intraocular pressure should be monitored (see WARNINGS).

Prolonged use of topical anti-bacterial agents may give rise to overgrowth of nonsusceptible organisms including fungi.

Carcinogenesis, Mutagenesis, Impairment of Fertility: Long-term studies in animals to evaluate carcinogenic or mutagenic potential have not been conducted with polymyxin B sulfate. Treatment of cultured human lymphocytes in vitro with neomycin increased the frequency of chromosome aberrations at the highest concentration (80 µg/mL) tested. However, the effects of neomycin on carcinogenesis and mutagenesis in humans are unknown. Polymyxin B has been reported to impair the motility of equine sperm, but its effects on male or female fertility are unknown.

Pregnancy: Teratogenic Effects: Pregnancy Category C. Dexamethasone has been shown to be teratogenic in mice and rabbits following topical ophthalmic application in multiples of the therapeutic dose.

In the mouse, corticosteroids produce fetal resorptions and a specific abnormality, cleft palate. In the rabbit, corticosteroids have produced fetal resorptions and multiple abnormalities involving the head, ears, limbs, palate, etc.

There are no adequate or well-controlled studies in pregnant women. MAXITROL Suspension should be used during pregnancy only if the potential benefit to the mother justifies the potential risk to the embryo or fetus. Infants born of mothers who have received substantial doses of corticosteroids during pregnancy should be observed carefully for signs of hypoadrenalism.

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 MAXITROL Ophthalmic Suspension is administered to a nursing woman.

Pediatric Use: Safety and effectiveness in pediatric patients below the age of 2 years have not been established.

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

Last updated on RxList: 8/27/2008

No information provided.

MAXITROL (neomycin and polymyxin B sulfates and dexamethasone ophthalmic suspension) is contraindicated in most viral diseases of the cornea and conjunctiva, including epithelial herpes simplex keratitis (dendritic keratitis), vaccinia, and varicella, and also in mycobacterial infection of the eye and fungal diseases of ocular structures. MAXITROL is also contraindicated in individuals with known or suspected hypersensitivity to any of the ingredients of this preparation and to other corticosteroids.

Last updated on RxList: 8/27/2008

Corticosteroids suppress the inflammatory response to a variety of agents and they probably delay or slow healing. Since corticosteroids may inhibit the body's defense mechanism against infection, a concomitant antimicrobial drug may be used when this inhibition is considered to be clinically significant in a particular case.

When a decision to administer both a corticosteroid and an antimicrobial is made, the administration of such drugs in combination has the advantage of greater patient compliance and convenience, with the added assurance that the appropriate dosage of both drugs is administered, plus assured compatibility of ingredients when both types of drugs are in the same formulation and, particularly, that the correct volume of drug is delivered and retained.

The relative potency of corticosteroids depends on the molecular structure, concentration and release from the vehicle.

Last updated on RxList: 8/27/2008

If inflammation or pain persists longer than 48 hours or becomes aggravated, the patient should be advised to discontinue use of the medication and consult a physician.

This product is sterile when packaged. To prevent contamination, care should be taken to avoid touching the bottle tip to eyelids or to any other surface. The use of this bottle by more than one person may spread infection. Keep bottle tightly dosed when not in use. Keep out of the reach of children.

Last updated on RxList: 8/27/2008

IMPORTANT NOTE: This is a summary and does not contain all possible information about this product. For complete information about this product or your specific health needs, ask your health care professional. Always seek the advice of your health care professional if you have any questions about this product or your medical condition. This information is not intended as individual medical advice and does not substitute for the knowledge and judgment of your health care professional. This information does not contain any assurances that this product is safe, effective, or appropriate for you.

NEOMYCIN/POLYMYXIN/DEXAMETHASONE - OPHTHALMIC DROPS

(nee-oh-MY-sin/paw-lee-MIX-in/dex-uh-METH-uh-sown)

COMMON BRAND NAME(S): Maxitrol, Poly-Dex

USES: This medication is used to treat conditions involving swelling (inflammation) of the eyes and to treat or prevent bacterial eye infections. This product contains neomycin and polymyxin, antibiotics that work by stopping the growth of bacteria. It also contains dexamethasone, an anti-inflammatory corticosteroid that works by reducing swelling.

This medication treats/prevents only bacterial eye infections. It will not work for other types of eye infections and may worsen them (e.g., infections caused by viruses, fungi, mycobacteria). Unnecessary use or overuse of any antibiotic can lead to its decreased effectiveness.

HOW TO USE: This medication is applied to the eye(s) as directed by your doctor. To apply eye drops, wash your hands first. To avoid contamination, do not touch the dropper tip or let it touch your eye or any other surface. Shake the bottle well before each dose.

Do not wear contact lenses while you are using this medicine. Sterilize contact lenses according to manufacturer's directions and check with your doctor before you begin using them again.

Tilt your head back, look upward, and pull down the lower eyelid to make a pouch. Hold the dropper directly over your eye and place one drop into the pouch. Look downward and gently close your eyes for 1 to 2 minutes. Place one finger at the corner of your eye (near the nose) and apply gentle pressure. This will prevent the medication from draining out. Try not to blink and do not rub your eye. Repeat these steps if your dose is for more than 1 drop and for your other eye if so directed. Repeat as often as directed by your doctor. Your dosage is based on your medical condition and response to therapy.

Do not rinse the dropper. Replace the dropper cap after each use.

If you are using another kind of eye medication (e.g., drops or ointments), wait at least 5 minutes before applying other medications. Use eye drops before eye ointments to allow the eye drops to enter the eye.

Do not use this medication more often than prescribed or for longer than 10 days unless directed by your doctor.

Use this medication regularly in order to get the most benefit from it. To help you remember, use it at the same times each day. Continue to use this medication for the full time prescribed, even if symptoms disappear after a few days. Stopping the medication too soon may allow bacteria to continue to grow, which may result in a return of the infection.

Inform your doctor if your condition does not improve in a few days.

SIDE EFFECTS: Stinging/burning of the eyes for 1 to 2 minutes may occur when this medication is applied. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Use of this medication for prolonged/repeated periods may result in a new fungal eye infection and may increase your risk for other eye problems (e.g., glaucoma, cataracts, delayed wound healing). Do not use this medication for longer than prescribed. Tell your doctor immediately if any of these unlikely but serious side effects occur: new or worsening eye symptoms (e.g., discharge, swelling, redness), vision problems, eye pain.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: rash, itching, swelling, severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

Contact your doctor for medical advice about side effects. The following numbers do not provide medical advice, but in the US you may report side effects to the Food and Drug Administration (FDA) at 1-800-FDA-1088. In Canada, you may call Health Canada at 1-866-234-2345.

PRECAUTIONS: Before using this medication, tell your doctor or pharmacist if you are allergic to neomycin, polymyxin, or dexamethasone; or to aminoglycoside antibiotics (e.g., gentamicin, tobramycin); or to corticosteroids (e.g., hydrocortisone, prednisone); or to preservatives (e.g., benzalkonium chloride); or if you have any other allergies.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: other eye problems (e.g., glaucoma).

After you apply this drug, your vision may become temporarily unstable. Use caution while driving, using machinery, or doing any other activity that requires clear vision.

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

It is not known if this drug passes into breast milk. Consult your doctor before breast-feeding.

DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with them first.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use.

Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

OVERDOSE: This medicine may be harmful if swallowed. If swallowing or overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US National Poison Hotline at 1-800-222-1222. Canada residents can call a provincial poison control center.

NOTES: Do not share this medication with others.

This medication has been prescribed for your current condition only. Throw away any unused medication after treatment is completed. Do not use it later for another infection. A different medication may be necessary in that case.

If you use this medication for 10 days or longer, laboratory and/or medical tests (e.g., eye exams) should be performed regularly to monitor your progress or check for side effects. Consult your doctor for more details.

MISSED DOSE: If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.

STORAGE: Store at room temperature between 59-86 degrees F (15-30 degrees C) away from heat, light, and moisture. Do not store in the bathroom. Throw away this medication and do not use it if the solution turns brown or cloudy or contains particles. Keep all medicines away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.

Information last revised July 2008 Copyright(c) 2008 First DataBank, Inc.