Opthaflox

Quick links to important sections

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Opthaflox

Property Description
Active Ingredient Lomefloxacin
Form Sterile Ophthalmic Solution (Eye Drops)
Pharmacological Class Fluoroquinolone Antibiotic
General Purpose Bacterial eradication in the eye
Origin Synthetic

Opthaflox: Defining the Medicinal Entity and Its Class

Opthaflox is a prescription-only medicinal product defined by its active component, the anti-infective agent Lomefloxacin. The medicine is categorically a synthetic compound belonging to the fluoroquinolone antibiotic pharmacological class. This classification indicates that the drug is designed for potent antibacterial activity. Lomefloxacin is a quinolone carboxylic acid derivative, which means it is chemically synthesized and not naturally derived.

Lomefloxacin's formulation is clinically recognized for its reliable spectrum of antibacterial coverage typical of second-generation quinolones. This compound is classified as a single-ingredient product, or monosemantic formulation, utilizing the hydrochloride salt of Lomefloxacin. The designation as a fluoroquinolone establishes its role as a key anti-infective designed to eliminate susceptible bacterial strains.

Composition and Pharmaceutical Form: Lomefloxacin Ophthalmic Solution

Opthaflox is formulated specifically as a sterile ophthalmic solution, commonly referred to as eye drops, for highly localized application. The product utilizes Lomefloxacin as the exclusive active ingredient, dissolved within an aqueous vehicle to ensure suitability for the delicate tissues of the eye. Its use as an ophthalmic solution makes it a preferred option for topical ophthalmic administration.

This method of delivery ensures a high concentration of the active antibacterial agent is achieved precisely at the site of the problem, optimizing its immediate availability where it is needed most to counter bacterial growth.

General Purpose: Targeted Bactericidal Action

The general purpose of Opthaflox is to resolve acute bacterial issues affecting the external eye by exerting a bactericidal (bacteria-killing) effect. This action is rooted in Lomefloxacin's ability to interfere with the fundamental processes that bacteria require to multiply, specifically by inhibiting DNA gyrase and topoisomerase IV.

The rapid onset of its specific bactericidal function ensures the swift and irreversible elimination of the bacterial pathogens causing the issue. This targeted interference ultimately leads to the destruction of bacterial cells and the resolution of the acute problem.

Regulatory References

  1. Lomefloxacin Ophthalmic Solution FDA Label (via DailyMed)

What side effects are possible with Opthaflox?

The official safety information for Opthaflox (Lomefloxacin Ophthalmic Solution) describes adverse reactions primarily categorized by their frequency and the physiological system affected, consistent with regulatory standards.

The most frequently reported reactions are classified as Common (occurring in 1% to 10% of users) and are predominantly local Eye disorders. These include transient ocular discomfort such as stinging, burning, foreign body sensation, and ocular pruritus (itching). Less frequently, effects categorized under Nervous system disorders, such as headache or dizziness, have been documented.

The medicine's label also incorporates high-level safety warnings relevant to the entire fluoroquinolone class of antibiotics. These include the potential for rare, serious adverse reactions such as anaphylactic shock and severe dermal conditions like Stevens-Johnson Syndrome (SJS) or Toxic Epidermal Necrolysis (TEN). The regulatory documentation requires that the drug be immediately discontinued at the first sign of a rash or other hypersensitivity event.

Safety restrictions include a contraindication for any individual with a known history of hypersensitivity to Lomefloxacin, other quinolones, or any component of the formulation. Regarding specific populations, safety and effectiveness have not been established in infants less than one year of age. The most common ocular side effects are reported to be more frequent during the initial days of treatment.

Overdose and Emergency Response

Overdose and when to seek help

The regulatory profile for Opthaflox (Lomefloxacin Ophthalmic Solution) addresses overdose in two primary contexts: local exposure and potential systemic effects.

Documented Overdose Scenarios

Low Exposure Risk: Accidental oral ingestion of the entire bottle contents is generally considered by regulators to result in a low risk of systemic toxicity. This classification is based on the limited total quantity of Lomefloxacin in the ophthalmic solution, which is substantially less than a standard therapeutic oral dose. For a local overdose (excessive drops applied to the eye), regulatory guidance indicates that the exposed area can be rinsed with clean water.

Acute Severe Hypersensitivity Potential: Although ophthalmic exposure is topical, the prescribing information addresses the potential for serious and occasionally fatal hypersensitivity (anaphylactic) reactions known to occur with the systemic fluoroquinolone class. Such severe outcomes may present as cardiovascular collapse, angioedema, or airway obstruction.

Emergency Actions Required

Regulatory documentation mandates that any serious acute hypersensitivity reaction requires immediate emergency treatment. If a suspected overdose or accidental ingestion occurs, contact emergency medical services immediately. Management is symptomatic and supportive; no specific antidote is known for Lomefloxacin overdose. The supportive measures documented for severe reactions include oxygen and airway management.

Therapeutic Uses of Opthaflox

The therapeutic area for this medication involves addressing bacterial infections of the eye and surrounding structures. Opthaflox, which contains the active ingredient lomefloxacin, is an ophthalmic antibiotic that is applied across domains where additional symptomatic support is needed.

The ophthalmic preparation is commonly used for managing infections caused by susceptible bacterial strains in conditions such as bacterial conjunctivitis (pink eye), blepharitis (eyelid inflammation), blepharoconjunctivitis, and corneal ulcers associated with susceptible pathogens. The medication is relevant for easing symptoms related to inflammatory or irritative states.

This focused action contributes to easing the overall symptom load and supports the management of acute episodes. This may help improve day-to-day comfort during symptomatic periods, providing relief from discomfort and visual interference. It is applied across therapeutic domains involving heightened symptomatic responses in the ocular area.

“The therapy is relevant for managing symptoms that interfere with daily comfort, and may assist with maintaining functional stability.”


Quick Fact: Relief for Inflammatory Symptoms
This medication is commonly used to help manage the clusters of symptoms associated with active bacterial eye infection, including redness, soreness, and discharge.

Eligibility and Restrictions for Use

Who Can and Cannot Use Opthaflox?

The population eligibility for Opthaflox (Lomefloxacin ophthalmic solution) is defined by regulatory standards, distinguishing between absolute prohibitions and conditional restrictions.


Eligibility Scope

Category Regulatory Statement
Populations for whom use is allowed Adults and children who are above 1 year of age.
Populations for whom use is contraindicated Patients with known hypersensitivity to Lomefloxacin, any excipients, or the quinolone class of antibiotics.
Age-related eligibility rules Use in infants up to 1 year of age is not recommended as safety and efficacy are not clinically established.
Pregnancy and lactation eligibility status Not Recommended Unless Necessary (Conditional Use).
Eligibility-related restrictions During treatment, intensive exposure to sunlight or UV-radiation should be avoided due to a potential for photosensitization.

Resulting Eligibility Structure

Official regulatory documents establish that the medicine is contraindicated for any individual with an allergy to Lomefloxacin or to the quinolone antibiotic class. Use is approved for adults and children one year of age and older. The drug is not recommended for infants under one year because its safety profile is not clinically established in this age group. For women who are pregnant or breastfeeding, the medicine is only to be used when the potential benefit is determined to outweigh the risk, due to a lack of human clinical data.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The following interaction information is based on the official regulatory labeling for ophthalmic quinolones (such as Ofloxacin or Lomefloxacin), which includes specific warnings extrapolated from the systemic use of the drug class.

Category Interaction Note (Official Regulatory Basis)
Local Ophthalmic Products Timing Separation: The label requires an interval (typically 5 to 15 minutes) between the instillation of Opthaflox and other topical eye medications.
Heavy Metal-Containing Products Reduced Efficacy Risk: Some official sources state that ophthalmic preparations containing heavy metals, such as Zinc, should not be used immediately before or after Opthaflox to prevent a reduction of efficacy through a local interaction.
Anticoagulants Effect Enhancement: Systemic administration of some quinolones has been shown to enhance the effects of oral anticoagulants, specifically Warfarin and its derivatives.
Xanthine Derivatives Metabolism Interference: Systemic use of some quinolones has been associated with elevated plasma concentrations of Theophylline and interference with the metabolism of Caffeine due to reduced clearance.
Systemic NSAIDs Additive Toxicity Risk: Caution is noted regarding the concomitant use of systemic Nonsteroidal Anti-inflammatory Drugs (NSAIDs), due to an additive risk of CNS toxicity reported with the systemic administration of some quinolones.

Interaction-Related Restriction: Opthaflox is contraindicated in patients with a history of hypersensitivity to the active ingredient, any component of the formulation, or to other quinolones in the drug class. The regulatory profile is structured to convey these systemic class warnings as a precaution, despite minimal systemic absorption from the eye drops.

Mechanism of Action

Targeting Bacterial DNA Management Enzymes

Opthaflox exerts its function by acting as an inhibitor of two essential bacterial enzymes: DNA Gyrase and Topoisomerase IV. These enzymes are critical for the proper supercoiling and separation of bacterial DNA, processes essential for cell function. By selectively binding to these targets, the drug initiates a cascade that leads directly to the permanent failure of the bacterial replication pathway.


Mechanism of Irreversible Cell Destruction

The interaction between Lomefloxacin and the target enzymes is uniquely classified as Topoisomerase Poisoning. The drug binds to the transient complex where the enzyme has broken the DNA strand, stabilizing this break and preventing the necessary re-ligation. This action effectively converts the repair enzyme into a source of damage, causing irreparable DNA double-strand breaks. The resulting physiological consequence is the swift and deliberate bactericidal effect: the irreversible destruction of the bacterial cell.


Limitations in Mechanistic Efficacy

The efficacy of this destructive mechanism can be constrained by specific bacterial genetic changes. The drug's ability to bind and stabilize the enzyme complex is reduced if mutations occur in the target enzyme genes (gyrA and parC), or if the bacteria overexpresses membrane pumps that actively expel the Lomefloxacin molecule. These limitations represent biological scenarios where the drug's intended mechanism is functionally overridden.

Dosage and Administration Information

The official instructions for Opthaflox (Lomefloxacin Ophthalmic Solution, 0.3%) establish a precise, non-systemic use protocol that mandates topical instillation and defines both a general maintenance frequency and a more aggressive schedule for initial management. These rules set forth the exact amount of medicine to be delivered, the total duration of the course, and the required time spacing from other ocular agents to ensure the consistency of administration. The procedural steps and special conditions are documented to guide the correct handling and application of the sterile solution.


Official Administration Guidelines

Property Detail
Route of Administration Topical Ophthalmic Instillation (Applied into the lower conjunctival sac).
Standard Dosing Schedule One (1) drop per affected eye, typically two (2) to three (3) times per day, depending on regional authorization.
Acute/Initial Regimen A more aggressive pattern may be directed initially, such as one (1) drop every hour for a short period, followed by transition to the standard frequency.
Course Duration Designated for short-term use, with a typical course lasting 7 to 9 days.
Concurrent Ocular Use A mandatory time separation of at least 5 to 15 minutes must be observed between the application of Opthaflox and any other topical ophthalmic product.
Pediatric Use The standard adult dosing regimen is generally applicable to children above one (1) year of age.
Missed-dose Rule Apply a missed dose as soon as remembered, unless it is almost time for the next scheduled dose, in which case the missed dose must be skipped without doubling the application.

Recent Clinical Evidence

Opthaflox: Recent Clinical Evidence


Evidence for Use in Bacterial Conjunctivitis

Research was studied for acute bacterial conjunctivitis (commonly known as pink eye) through randomized controlled trials (RCTs). These individual study findings were then explored further using meta-analyses, where data from multiple trials were combined to look for overall patterns. Studies monitored two main areas: clinical outcomes related to physical discomfort and microbiological outcomes, which were designed to assess changes in bacterial status identified through cultures. Findings describe patterns observed in the studies related to how the signs and symptoms of this condition were measured and tracked across different patient groups.

However, the existing research exploring short-term symptom changes focused primarily on the acute phase. The follow-up durations were limited, typically concluding within 7 to 9 days. Therefore, there is limited information for long-term outcomes regarding the risk of the condition returning after the initial short-term observation period.

Evidence for Use in Corneal Ulcers and Keratitis

Research examined Opthaflox for conditions associated with acute or disruptive episodes, such as bacterial keratitis (corneal ulcers). The evidence in this area primarily comes from prospective, controlled clinical trials that employed masked designs. Researchers measured outcomes reflecting daily functioning or activity level by focusing on the time required for the surface of the cornea to heal (re-epithelialization). Studies monitored patterns related to the time needed for re-epithelialization when compared to other study treatments. This research provides insight into short-term changes in conditions marked by functional limitations.

For corneal ulcers, sample sizes were modest when compared to the research for conjunctivitis. The evidence quality varies across studies, leading to some uncertainty regarding the generalizability of the findings.


What is Still Uncertain About Opthaflox Research

Research highlights what is known — and what is still uncertain — across the evidence landscape. For more complex conditions, sample sizes were modest, and evidence quality varies across studies. These factors mean that certainty remains low for some findings. Furthermore, there is limited information for long-term outcomes across all indications, as follow-up durations were generally short. The research provides context but not individual predictions, and findings describe group patterns, not personal outcomes.

Frequently Asked Questions (FAQ)

Common questions about Opthaflox (FAQ)


Q: Does Opthaflox cause blurred vision?

Official product information for ophthalmic fluoroquinolones, the antibiotic class that Opthaflox belongs to, indicates that blurred vision is a reported ocular adverse event. This effect is often described as a temporary decrease in how clearly you can see. Questions about this or any other visual changes should be directed to a healthcare professional.


Q: Can Opthaflox be used with contact lenses?

Regulatory guidance and patient information for this type of medication often advise against wearing contact lenses if an individual has signs or symptoms of a bacterial eye infection, which is what Opthaflox is used to treat. This guidance is provided in the context of treating active eye infections.


Q: Can elderly patients use Opthaflox?

Opthaflox is approved for use in adults, and the standard dosage regimen is generally considered applicable to elderly patients. Official documents do not mandate any specific dose adjustments or provide special warnings for the geriatric population for the ophthalmic solution.


Q: Can I drink alcohol while using Opthaflox?

Official documentation does not report any known drug-drug or drug-food interactions specifically involving the topical ophthalmic Lomefloxacin solution and alcohol consumption. There are no known interactions reported between the topical ophthalmic solution and alcohol.


Q: What happens if I stop using Opthaflox before the prescribed time?

Patient counseling information often notes the importance of not stopping the medication prematurely, even if symptoms begin to improve. Discontinuing use early may prevent the infection from being completely cleared and could contribute to the development of bacterial organisms that are resistant to the drug.


Q: Can Opthaflox be used to prevent infections?

Opthaflox is indicated for treating existing acute bacterial infections of the eye, such as conjunctivitis or corneal ulcers. Official regulatory documents indicate its use for treatment purposes, as well as for sterilization procedures before and after eye surgery. It is not generally indicated for non-surgical preventative (prophylactic) use.


Q: Why does Opthaflox need to be used for the full course, even if symptoms improve?

Regulatory warnings for anti-infectives, including Opthaflox, often describe the need to use the full prescribed amount. The rationale is tied to the therapeutic goal of eliminating susceptible bacteria, which helps to minimize the risk of bacterial return or the development of resistance.


Q: Does Opthaflox cause drowsiness?

The most frequently reported adverse reactions for Opthaflox are related to the eye (ocular discomfort). Drowsiness (somnolence) is not typically listed as a common or frequent adverse reaction, though less frequent side effects like headache and dizziness have been reported in official documents.


Q: Is there a generic version of Opthaflox available?

Official drug availability databases confirm that the active ingredient, Lomefloxacin ophthalmic solution, is available from various manufacturers under both brand names and generic labels in different regions worldwide.


Q: What is the safety classification of Opthaflox?

In the United States, Lomefloxacin is typically assigned Pregnancy Category C by the FDA. This classification is used when human data is lacking and means that the drug is to be used only when the potential benefit is determined to justify the potential risk to the fetus.


Q: Does Opthaflox affect driving ability?

Official patient information notes that Opthaflox may cause transient ocular discomfort or decreased visual acuity (blurred vision). The official documentation includes general advice that activities requiring clear vision, such as driving or operating machinery, should be avoided until the patient's vision is stable.

How should Opthaflox be stored and disposed of?

How to Store and Dispose of Opthaflox?

Storage Requirement Official Mandate
Temperature & Light Store at controlled room temperature (typically 15 C to 25 C) and protect from light and excessive heat.
Container Integrity Keep the medicine in its original container with the cap tightly closed. Do not transfer to another bottle.
Child Safety Keep out of the reach of children.
In-Use Stability Discard the solution 30 days after first opening the bottle or once the full course of treatment is finished, whichever is sooner.
Disposal Do not dispose of with household garbage or pour down the drain/sewage system. Unused product must be discarded in accordance with local/regional regulations to prevent environmental contamination.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

Available in countries:

Equivalent of Opthaflox found in:

A-Z Index: