n f x oral drops - Norfloxacin (0.3% w/v) medicine

Loxone 0.3% Eye Drop: Complete Guide to Uses, Side Effects, and Safety

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🏭 Parex Pharmaceuticals Pvt Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 24, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
12 min read
Evidence: Well-established for bacterial conjunctivitis.
Reviewed by
SaathiMed Expert Panel | Sep 24, 2026

When to Call Your Doctor IMMEDIATELY

  • Severe eye pain or sudden vision loss
  • Swelling of the face, lips, or throat
  • Difficulty breathing or swallowing
  • Severe allergic reaction with rash and itching
  • No improvement after 3 days of treatment
  • Development of new symptoms such as eye discharge or increased redness
  • Signs of superinfection, such as white patches in the eye

If experiencing severe symptoms, call emergency services immediately.

What is n f x oral drops used for?

This medicine is an antibiotic eye drop containing norfloxacin 0.3% w/v. It is used to treat bacterial eye infections such as conjunctivitis. It works by killing bacteria. Use as prescribed by your doctor.

  • Generic Name: Norfloxacin (0.3% w/v)
  • Manufacturer: Parex Pharmaceuticals Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 n f x oral drops के बारे में (Hindi Summary)

उपयोग: यह दवा नोरफ्लोक्सासिन 0.3% आई ड्रॉप है, जिसका उपयोग बैक्टीरियल आई इन्फेक्शन जैसे कंजंक्टिवाइटिस (आंख आना) के इलाज के लिए किया जाता है। यह आंखों में होने वाले बैक्टीरियल संक्रमण को रोकती है और आंखों की लालिमा, सूजन और दर्द को कम करती है।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में आंखों में जलन, खुजली, लालिमा और धुंधली दृष्टि शामिल हैं। ये आमतौर पर हल्के और अस्थायी होते हैं। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन यदि आपको एलर्जी, सूजन या सांस लेने में कठिनाई हो तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा का उपयोग करने से पहले अपने डॉक्टर को अपनी एलर्जी और चिकित्सीय स्थिति के बारे में बताएं। कॉन्टैक्ट लेंस पहनने से बचें। ड्रॉपर की टिप को आंख या किसी सतह को न छुएं। निर्धारित खुराक का पालन करें और बिना डॉक्टर की सलाह के दवा बंद न करें।

💡 Did You Know? The Indian pharmaceutical market is expected to reach $130 billion by 2030.

💊 n f x oral drops Uses & Benefits

[{"condition":"Bacterial conjunctivitis","description":"This medicine is used to treat bacterial conjunctivitis caused by susceptible organisms, reducing redness, discharge, and irritation.","evidence":"Well-established"},{"condition":"Corneal ulcers","description":"It may be used in the treatment of corneal ulcers caused by susceptible bacteria, under close medical supervision.","evidence":"Established"},{"condition":"Blepharitis","description":"Sometimes prescribed for bacterial blepharitis, an inflammation of the eyelids.","evidence":"Limited"}]

Off-label uses: [{"condition":"Trachoma","description":"May be used off-label for trachoma, a chlamydial eye infection, though other antibiotics are preferred.","evidence":"Limited"}]

Primary treatment for: Bacterial conjunctivitis

Also treats: Corneal ulcers, Blepharitis

📋 Drug Information

Generic Name(s)Norfloxacin (0.3% w/v)
Brand Namen f x oral drops
ManufacturerParex Pharmaceuticals Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassANTI INFECTIVES
Action ClassQuinolones/ Fluroquinolones
Route of AdministrationOphthalmic
StorageStore at room temperature (15-30°C). Protect from light and freezing. Keep bottle tightly closed when not in use.
Shelf Life24 months from the date of manufacture. Discard 4 weeks after opening.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Always wash your hands before and after applying this medicine to prevent contamination.
2
Do not touch the dropper tip to your eye, eyelid, or any surface, as this can introduce bacteria.
3
If you wear contact lenses, remove them before application and wait at least 15 minutes before reinserting.
4
Complete the full course as prescribed, even if symptoms improve, to prevent recurrence and resistance.
5
If you are using other eye drops, wait at least 5-10 minutes between applications to avoid washing out the medicine.
6
Report any signs of allergic reaction, such as rash, itching, or swelling, to your doctor immediately.
7
Do not use this medicine for longer than prescribed without consulting your doctor.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Red eye with discharge
This medicine is commonly prescribed for bacterial conjunctivitis.
Likely Use
✅
Eye pain and blurred vision
May be used for corneal ulcers under medical supervision.
Likely Use
❌
Watery eye without discharge
This medicine is not effective for viral or allergic eye conditions.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionSystemic absorption of norfloxacin following topical ophthalmic administration is minimal. However, some absorption may occur through the nasolacrimal duct, especially if the punctum is not occluded.
DistributionNot established from the available information.
Protein BindingNot established from the available information.
MetabolismNot established from the available information.
Half-LifeNot established from the available information.
ExcretionNot established from the available information.
BioavailabilityNot established from the available information.
Onset of ActionThe onset of action is typically within 30 minutes to 1 hour after instillation, but clinical improvement may take 1-2 days.
Peak Plasma TimeNot established from the available information.
Duration of ActionThe antibacterial effect lasts for several hours; the usual dosing interval is every 2-4 hours initially, then reduced.

How It Works

Norfloxacin, the active ingredient in this medicine, is a synthetic broad-spectrum fluoroquinolone antibiotic. It exerts its bactericidal effect by inhibiting two essential bacterial enzymes: DNA gyrase (topoisomerase II) and topoisomerase IV. DNA gyrase is responsible for introducing negative supercoils into DNA, relieving topological stress during replication, while topoisomerase IV is involved in decatenation of interlinked DNA strands. By binding to these enzymes, norfloxacin stabilizes the enzyme-DNA complex, blocking DNA replication, transcription, repair, and recombination. This leads to rapid bacterial cell death. Norfloxacin is active against a wide range of gram-negative and gram-positive bacteria, including Pseudomonas aeruginosa, but has limited activity against anaerobes.

Mechanism Steps

1
Penetration into bacterial cell: Norfloxacin penetrates the bacterial cell wall and cytoplasmic membrane, likely through porin channels.
2
Inhibition of DNA gyrase: Norfloxacin binds to the DNA gyrase enzyme, stabilizing the enzyme-DNA complex and preventing the re-ligation of DNA strands, thereby blocking DNA replication.
3
Inhibition of topoisomerase IV: Norfloxacin also inhibits topoisomerase IV, which is involved in separating interlinked DNA molecules during replication, leading to further disruption of DNA processes.
4
Bacterial cell death: The inhibition of these enzymes leads to the accumulation of double-strand breaks in DNA, triggering bacterial cell death.

💡 How to Take n f x oral drops

Strength: 0.3% w/v eye drops

1Wash your hands thoroughly with soap and water.
2Shake the bottle gently before use.
3Tilt your head back and pull down your lower eyelid to form a pouch.
4Hold the dropper above the eye and squeeze one drop into the pouch. Avoid touching the dropper tip to your eye or eyelid.
5Close your eye gently and press a finger against the inner corner of your eye for 1-2 minutes to prevent the medicine from draining into your throat.
6Repeat for the other eye if needed.
7Replace the cap tightly after use.
8Wash your hands again.

Dosage Information

Adult DosageThe usual adult dose for bacterial conjunctivitis is 1-2 drops instilled into the affected eye(s) every 2-4 hours for the first 2 days, then 1-2 drops 4 times daily for up to 7 days. For corneal ulcers, dosing may be more frequent, as directed by a doctor. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageNo specific dosage adjustments are required for elderly patients, but caution is advised due to potential reduced renal function.
Renal ImpairmentNo dosage adjustment is typically required for ophthalmic use, but systemic absorption may occur. Use with caution in severe renal impairment.
Hepatic ImpairmentNo dosage adjustment is typically required for ophthalmic use.
Maximum Daily DoseNot established from the available information.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Take the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than half the dosing interval has passed
→ Skip the missed dose.
💡 Do not double dose to catch up.

⚠️ Side Effects of n f x oral drops

✅ Common Side Effects

Transient burning or stinging (Common (5-10%))
Usually resolves on its own. If persistent, consult your doctor.
Eye redness (Common (5-10%))
May be due to the infection or the medicine. Consult if it worsens.
Blurred vision (Common (5-10%))
Avoid driving or operating machinery until vision clears.
Eye discomfort (Common (5-10%))
Usually temporary. If severe, contact your doctor.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek immediate medical attention if you experience rash, itching, swelling, dizziness, or difficulty breathing.
Corneal deposits (Rare (<0.1%))
Report any vision changes or persistent eye pain to your doctor.
Superinfection (Rare (<0.1%))
Prolonged use may lead to overgrowth of non-susceptible organisms. Consult your doctor if new symptoms appear.

⚠️ Rare Side Effects

Tendon rupture
Seek immediate medical attention if you experience tendon pain or swelling.
Peripheral neuropathy
Report numbness, tingling, or burning sensation to your doctor.

Consult your doctor if you experience any unusual symptoms.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypersensitivity to norfloxacin or other fluoroquinolones","History of tendon disorders with fluoroquinolone use","Viral or fungal eye infections"]

⚠️ Warnings & Precautions

["For ophthalmic use only. Do not inject or ingest.","Avoid contact lenses during treatment.","Do not touch dropper tip to eye or any surface.","Prolonged use may lead to bacterial or fungal superinfection.","Discontinue if allergic reaction occurs.","Use with caution in patients with renal impairment.","Safety and efficacy in children under 1 year not established."]

🤱 Lactation Safety

Norfloxacin is excreted in breast milk. Caution is advised when used during breastfeeding. Consult your doctor.

💊 Overdose Management

Overdose with this medicine is unlikely due to its topical nature. If accidental ingestion occurs, seek medical attention. Symptoms of overdose may include nausea, vomiting, and diarrhea.

⏰ Missed Dose

If you miss a dose, apply it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose.

Additional Safety Advice

General Safety

Before using this medicine, inform your doctor if you are allergic to norfloxacin or other quinolone antibiotics. Do not use this medicine while wearing contact lenses; remove lenses before application and wait at least 15 minutes before reinserting. Avoid touching the dropper tip to your eye or any surface to prevent contamination. Use this medicine exactly as prescribed; do not skip doses or stop early, as this can lead to resistance. If you are pregnant or breastfeeding, consult your doctor before use. Do not use this medicine for longer than prescribed without medical advice. If your symptoms worsen or do not improve within 2-3 days, contact your healthcare provider. Keep this medicine out of reach of children. Do not share this medicine with others.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may have reduced renal function; however, systemic absorption is minimal. Use with caution and monitor for side effects.

🤰 Pregnancy Planning (TTC)

If you are planning pregnancy, consult your doctor before using this medicine. Fluoroquinolones are generally avoided in pregnancy unless the benefit outweighs the risk.

🏥 Post-Surgery Considerations

If you have had eye surgery, consult your doctor before using this medicine. It may be prescribed to prevent infection, but follow your surgeon's instructions.

🦷 Dental Procedures

No specific considerations for dental procedures. Inform your dentist about all medications you are taking.

💚 Lifestyle Tips for Better Results

🏃
Avoid touching or rubbing your eyes to prevent spreading the infection.
🥗
Wash your hands frequently, especially before and after applying the medicine.
😴
Do not share towels, pillows, or eye makeup with others.
💧
Clean your eyeglasses regularly.
🧘
Avoid wearing eye makeup until the infection clears.
🌞
Get adequate rest to support your immune system.

🏋️ Exercise Considerations

No specific exercise restrictions, but avoid swimming or activities that may expose your eyes to water or irritants until the infection resolves.

🥗 Diet Recommendations

Stay well hydrated.
Include foods rich in vitamin A and C to support eye health.
Avoid excessive caffeine and alcohol, which may worsen dryness.

💼 Impact on Daily Work & Life

This medicine may cause temporary blurred vision after application. Avoid driving or operating heavy machinery until your vision is clear. You can continue normal activities, but avoid close contact with others to prevent spreading the infection.

🛑 When to Stop This Medicine

Stop using this medicine only after completing the prescribed course or as directed by your doctor. If you experience severe side effects, stop and seek medical advice immediately.

📅 Long-Term Use Effects

Long-term use of this medicine may lead to bacterial resistance and superinfection. It is not intended for prolonged use. If your symptoms persist, consult your doctor for further evaluation.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Warm compresses

Can help relieve discomfort and loosen crusts in conjunctivitis.

Evidence: Well-established
Artificial tears

May provide symptomatic relief but do not treat the infection.

Evidence: Limited

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

No known interactions with vaccines. Continue routine vaccinations as scheduled.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate unless specified

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in bathroom cabinet

✅ DO

Discard 4 weeks after opening

❌ DON'T

Do not use after expiry date

✈️ Traveling with This Medicine

When traveling with this medicine, keep it in your carry-on luggage in its original packaging. Carry a copy of your prescription to avoid issues at customs. Store at room temperature and protect from extreme heat or cold. If traveling across time zones, continue your regular dosing schedule as closely as possible. Do not leave the bottle in a hot car or checked luggage.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 35-year-old woman with bacterial conjunctivitis
She noticed redness, itching, and discharge in her right eye. Her doctor prescribed this medicine, to be used every 4 hours. After 2 days, her symptoms improved significantly. She completed the 7-day course and the infection cleared completely.
💡 Lesson: Consistent use and completing the full course are essential to resolve the infection and prevent recurrence.
👤 A 60-year-old man with corneal ulcer
He presented with severe eye pain and blurred vision. He was diagnosed with a corneal ulcer and started on this medicine every hour. With close monitoring, the ulcer healed over 2 weeks. He was advised not to wear contact lenses during treatment.
💡 Lesson: Corneal ulcers require frequent dosing and close medical supervision. Adherence to the prescribed schedule is critical.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: You may start feeling better within 1-2 days, but complete the full course as prescribed.

Q: Can I use this medicine for viral eye infection?

A: No, this medicine is effective only against bacterial infections. Viral infections require different treatment.

Q: Is it safe to use this medicine during pregnancy?

A: Consult your doctor before use. Fluoroquinolones are generally avoided in pregnancy unless necessary.

Q: Can I wear contact lenses while using this medicine?

A: No, you should avoid wearing contact lenses during treatment. Remove them before application and wait 15 minutes before reinserting.

Q: What should I do if I miss a dose?

A: If you miss a dose, apply it as soon as you remember. If it's almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I use this medicine for viral eye infection?
  • How long should I use this medicine?
  • Is it safe to use this medicine during pregnancy?
  • Can I wear contact lenses while using this medicine?
  • What should I do if I miss a dose?
  • Are there any food restrictions while using this medicine?

🔄 Substitutes for n f x oral drops

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: This medicine can cure all types of eye infections.
    Fact: This medicine is effective only against bacterial eye infections. It does not treat viral or fungal infections.
  • Myth: You can stop using this medicine as soon as symptoms improve.
    Fact: You should complete the full course as prescribed to prevent recurrence and resistance.

🔄 Alternative Options

Generic Alternatives

  • Norfloxacin 0.3% eye drops

📊 Comparison with Similar Medicines

[{"medicine":"Norfloxacin eye drops","class":"Fluoroquinolone","spectrum":"Broad-spectrum, including Pseudomonas","dosage":"1-2 drops every 2-4 hours initially"},{"medicine":"Ciprofloxacin eye drops","class":"Fluoroquinolone","spectrum":"Broad-spectrum, including Pseudomonas","dosage":"1-2 drops every 2 hours initially"},{"medicine":"Ofloxacin eye drops","class":"Fluoroquinolone","spectrum":"Broad-spectrum","dosage":"1-2 drops every 2-4 hours initially"}]

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