Dekortyn N Eye/ear Drops: Complete Medicine Guide
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026
When to Call Your Doctor IMMEDIATELY
- Sudden swelling of the face, lips, or throat, or difficulty breathing.
- Severe eye pain, vision loss, or seeing halos around lights.
- Ringing in the ears, hearing loss, or severe dizziness.
- New or worsening eye or ear discharge, especially if it becomes thick or colored.
- Severe headache with nausea or vomiting.
- Signs of a serious allergic reaction such as widespread rash, hives, or blistering.
- Increased eye redness and pain that does not improve after 48 hours of treatment.
If experiencing severe symptoms, call emergency services immediately.
What is necidex eye/ear drops used for?
This medicine is a prescription eye and ear drop that combines neomycin, an antibiotic, and dexamethasone, a steroid. It treats bacterial infections with inflammation, such as bacterial conjunctivitis and swimmer's ear. Use it exactly as prescribed, usually 1-2 drops every 4-6 hours, and do not use it for more than 7-10 days without medical advice.
- Generic Name: Neomycin (0.5% w/v) + Dexamethasone (0.1% w/v)
- Manufacturer: Indiana Opthalmics
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 necidex eye/ear drops के बारे में (Hindi Summary)
उपयोग: यह दवा आंख और कान की बैक्टीरियल संक्रमण के इलाज के लिए इस्तेमाल की जाती है, जिसमें सूजन भी होती है। इसमें नियोमाइसिन नामक एंटीबायोटिक और डेक्सामेथासोन नामक स्टेरॉयड होता है। यह बैक्टीरियल कंजंक्टिवाइटिस (आंख आना), ब्लेफेराइटिस (पलकों की सूजन), स्टाई (गुहेरी), स्विमर इयर (कान का बाहरी संक्रमण) और कान के एक्जिमा के संक्रमण में उपयोगी है। यह दवा केवल डॉक्टर के पर्चे पर ही लेनी चाहिए। आंख या कान में डालने से पहले हाथ धोएं और ड्रॉपर को किसी चीज से न छुएं।
साइड इफेक्ट्स: आम दुष्प्रभावों में डालने के तुरंत बाद हल्की जलन, खुजली या लालिमा हो सकती है। कुछ लोगों को आंख या कान में असुविधा महसूस होती है। लंबे समय तक उपयोग से आंखों में दबाव बढ़ सकता है, मोतियाबिंद हो सकता है, या फंगल संक्रमण हो सकता है। कान में अगर पर्दा फटा हो तो सुनने की क्षमता कम हो सकती है। गंभीर एलर्जी जैसे चेहरे, होंठ या गले में सूजन, सांस लेने में कठिनाई हो तो तुरंत डॉक्टर से मिलें।
सुरक्षा सलाह: इस दवा का उपयोग डॉक्टर के बताए अनुसार ही करें। उपयोग से पहले और बाद में हाथ धोएं। ड्रॉपर की नोक को आंख, कान, उंगली या किसी सतह से न छुएं। आंख में डालते समय नीचे की पलक खींचकर एक बूंद डालें और आंख बंद करके 1-2 मिनट रखें। कान में डालते समय करवट लेटें और 3-5 मिनट तक उसी स्थिति में रहें। डॉक्टर की सलाह के बिना 7-10 दिन से ज्यादा इस्तेमाल न करें। अगर आप गर्भवती हैं या स्तनपान करा रही हैं तो डॉक्टर को बताएं। बच्चों की पहुंच से दूर रखें।
💊 necidex eye/ear drops Uses & Benefits
[{"condition":"Bacterial conjunctivitis (pink eye)","description":"This medicine is used to treat bacterial infection of the clear membrane covering the eye, helping to clear redness, discharge, and irritation.","evidence":"Well-established"},{"condition":"Blepharitis","description":"It helps control bacterial infection and inflammation of the eyelid margins, reducing crusting, swelling, and discomfort.","evidence":"Well-established"},{"condition":"Infected stye (hordeolum)","description":"The antibiotic component fights the infection while the steroid reduces the painful swelling of the eyelid gland.","evidence":"Well-established"},{"condition":"Otitis externa (swimmer's ear)","description":"This medicine treats bacterial infection and inflammation of the outer ear canal, relieving pain, itching, and discharge.","evidence":"Well-established"},{"condition":"Infected eczema of the ear canal","description":"It is used when eczema of the ear canal becomes secondarily infected by bacteria, reducing both infection and inflammation.","evidence":"Well-established"}]
Off-label uses: [{"condition":"Post-operative inflammation after eye surgery","description":"Sometimes prescribed off-label to reduce inflammation and prevent infection after certain eye procedures, but only under close specialist supervision.","evidence":"Limited"},{"condition":"Allergic ear dermatitis with suspected bacterial infection","description":"Occasionally used off-label when allergic ear inflammation is complicated by bacterial infection, but safer alternatives are usually preferred.","evidence":"Limited"}]
Primary treatment for: Bacterial eye and ear infections with inflammation
Also treats: Bacterial conjunctivitis, Blepharitis, Infected stye, Otitis externa, Infected eczema of the ear canal
📋 Drug Information
| Generic Name(s) | Neomycin (0.5% w/v) + Dexamethasone (0.1% w/v) |
| Brand Name | necidex eye/ear drops |
| Manufacturer | Indiana Opthalmics |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | OPHTHAL OTOLOGICALS |
| Action Class | |
| Route of Administration | Ophthalmic and Otic (topical application to the eye and ear) |
| Storage | Store at room temperature between 15°C and 30°C (59°F to 86°F). Protect from light and excessive heat. Do not freeze. Keep the bottle tightly closed when not in use. |
| Shelf Life | 24 months from the date of manufacture, or as printed on the packaging. Once opened, discard after 4 weeks to avoid contamination. |
| WHO Guideline | Not established from the available information. |
| ICMR Guideline | Not established from the available information. |
👨⚕️ Doctor's Practical Tips
Evidence-based practical advice from experienced clinicians
🔍 Is This Medicine Right for Your Symptom?
Educational reference. Always consult a doctor for diagnosis.
🔬 How This Medicine Works (Pharmacology)
Pharmacokinetics
How It Works
This medicine works through two complementary mechanisms. Neomycin is an aminoglycoside antibiotic that binds to the bacterial 30S ribosomal subunit, causing misreading of messenger RNA and blocking protein synthesis. This leads to bacterial cell death. Dexamethasone is a synthetic glucocorticoid that binds to the glucocorticoid receptor inside cells, moves into the nucleus, and changes the production of many proteins. It reduces the release of inflammatory chemicals such as prostaglandins and leukotrienes, stabilizes immune cells, and suppresses swelling, redness, and itching. Together, the antibiotic controls the bacterial infection while the steroid calms the inflammatory response.
Mechanism Steps
💡 How to Take necidex eye/ear drops
Strength: Eye/ear drops containing neomycin 0.5% w/v and dexamethasone 0.1% w/v in a sterile aqueous solution.
Dosage Information
| Adult Dosage | The usual adult dose is one or two drops placed into the affected eye or ear every 4 to 6 hours, or as directed by your doctor. For eye infections, the dose may be reduced after the first few days as symptoms improve. For ear infections, the drops should be warmed slightly by holding the bottle in your hand for a minute before use. The exact dose and duration depend on the type and severity of the infection. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. |
| Pediatric Dosage | Pediatric dosing is not established from available information. Consult a pediatrician. This medicine is generally not recommended for children unless specifically prescribed by a doctor, and it should be used with caution in infants because of the risk of systemic absorption. |
| Elderly Dosage | Elderly patients may be more sensitive to the effects of corticosteroids, especially increased eye pressure and cataracts. Use the lowest effective dose for the shortest possible time. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. |
| Renal Impairment | No specific dose adjustment is usually needed for topical eye or ear use because systemic absorption is minimal. However, if you have severe kidney disease, inform your doctor, as neomycin can accumulate if absorbed systemically. |
| Hepatic Impairment | No specific dose adjustment is usually needed for topical eye or ear use. Dexamethasone is metabolized in the liver, but the amounts absorbed are too small to require adjustment. Consult your doctor if you have severe liver disease. |
| Maximum Daily Dose | The maximum daily dose depends on the prescribed frequency. Do not exceed the frequency recommended by your doctor. For most adults, the maximum is 1 to 2 drops in the affected eye or ear every 4 hours, not to exceed 12 drops per day, unless otherwise directed. |
Dosage Timeline
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of necidex eye/ear drops
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Gentamicin | Major | |
| Furosemide | Major | |
| Live vaccines | Major | |
| Ketoconazole | Moderate | |
| Rifampicin | Moderate | |
| Ibuprofen | Moderate | |
| Atropine eye drops | Minor | |
| Other eye drops | Minor |
🚨 Major Interactions
- Other aminoglycoside antibiotics (e.g., gentamicin, tobramycin, amikacin)
- Loop diuretics (e.g., furosemide, ethacrynic acid)
- Live vaccines
⚡ Moderate Interactions
- CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, ritonavir)
- CYP3A4 inducers (e.g., rifampicin, carbamazepine, phenytoin)
- NSAIDs (e.g., ibuprofen, diclofenac)
🍷 Alcohol Interaction
There is no known direct interaction between this medicine and alcohol when used as eye or ear drops. However, alcohol can worsen inflammation and delay healing, so it is best to avoid excessive alcohol while you are recovering from an infection.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Known allergy or hypersensitivity to neomycin, other aminoglycosides, dexamethasone, or any component of the formulation.","Viral infections of the eye or ear, including herpes simplex, vaccinia, and varicella.","Fungal infections of the eye or ear.","Untreated bacterial infections where the steroid could mask or worsen the infection.","Perforated eardrum or suspected perforation.","Tuberculosis of the eye.","Use in the eye after uncomplicated removal of a foreign body."]
⚠️ Warnings & Precautions
["Do not use this medicine for longer than prescribed, as prolonged use can cause glaucoma, cataracts, or secondary infections.","If you have a history of glaucoma, use this medicine only under close medical supervision.","Do not use in the ear if you have a perforated eardrum or a history of ear surgery, because of the risk of hearing loss.","Contact lenses should not be worn during treatment of eye infections unless your doctor approves.","If symptoms do not improve within a few days or worsen, stop the medicine and consult your doctor.","Do not share this medicine with others, as it may not be appropriate for their condition.","Keep the bottle tightly closed and do not use it after the expiry date.","If you are pregnant or breastfeeding, consult your doctor before using this medicine."]
🤱 Lactation Safety
It is not known whether neomycin and dexamethasone pass into breast milk in significant amounts after topical eye or ear use. However, because small amounts may be absorbed, caution is advised. Consult your doctor before using this medicine while breastfeeding. To minimize infant exposure, avoid applying the drops directly on the breast or nipple area.
💊 Overdose Management
Overdose from eye or ear drops is unlikely because the amount used is very small. If someone accidentally swallows the solution, rinse the mouth and drink plenty of water. Contact a poison control center or go to the nearest emergency room. Do not induce vomiting unless told to do so by a medical professional. If too much is applied to the eye or ear, rinse gently with warm water and contact your doctor if irritation occurs.
⏰ Missed Dose
If you miss a dose, apply it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not apply a double dose to make up for a missed one.
Additional Safety Advice
Use this medicine only as prescribed by your doctor. Wash your hands thoroughly before and after each use. Do not touch the dropper tip to your eye, ear, fingers, or any surface, because that can contaminate the bottle. For eye use, pull down the lower eyelid to form a small pocket, squeeze one drop inside, and close your eye gently for one to two minutes. For ear use, lie on your side with the affected ear facing up, put the drops in, and stay in that position for a few minutes. Do not use this medicine for more than the recommended duration, usually no longer than 7 to 10 days, unless your doctor tells you otherwise. Do not stop early even if you feel better, because the infection may come back. Avoid wearing contact lenses while using eye drops unless your doctor approves. If you are pregnant, planning pregnancy, or breastfeeding, tell your doctor before using this medicine. Keep this medicine out of reach of children. Do not use it after the expiry date, and do not use it if the solution looks cloudy or has particles.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients are more likely to experience increased eye pressure and cataracts from steroid eye drops. Use the lowest effective dose for the shortest duration. Regular eye check-ups are recommended if long-term use is necessary. Elderly patients may also be more sensitive to the effects of neomycin on hearing, especially if they have kidney problems.
🤰 Pregnancy Planning (TTC)
If you are planning pregnancy, consult your doctor before using this medicine. Corticosteroids and aminoglycosides should be used during pregnancy only when clearly needed. Your doctor will weigh the benefits and risks. If you become pregnant while using this medicine, inform your doctor immediately.
🏥 Post-Surgery Considerations
If you have had eye or ear surgery, do not use this medicine without your surgeon's approval. The steroid component can delay healing and increase the risk of infection. Your doctor may prescribe a different medicine or adjust the dose.
🦷 Dental Procedures
There are no specific precautions for dental procedures while using this medicine. However, inform your dentist about all medicines you are taking, including this one, especially if you have a history of allergies or are using steroids.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
You can continue light exercise, but avoid swimming or water sports until the infection clears, especially if you have an ear infection. If you have an eye infection, avoid activities that may expose your eyes to dust, sweat, or injury. Always wash your hands before and after exercise and avoid touching your face.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine may cause temporary blurred vision after eye drops, so wait until your vision is clear before driving or operating heavy machinery. Ear drops generally do not affect your ability to work, but if you experience dizziness, avoid tasks that require balance. You can continue most daily activities, but avoid swimming and contact sports until the infection clears.
🛑 When to Stop This Medicine
Stop using this medicine when your doctor tells you to, or after completing the prescribed course. If you experience any serious side effects, stop immediately and seek medical help. Do not stop early just because symptoms improve, as the infection may return. If you have used it for more than 10 days without improvement, stop and consult your doctor.
📅 Long-Term Use Effects
Long-term use of this medicine, especially beyond 10 days, can increase the risk of eye pressure elevation (glaucoma), cataracts, thinning of the cornea, and secondary infections. In the ear, prolonged use with a perforated eardrum can cause permanent hearing loss. Regular monitoring by an eye or ear specialist is recommended if long-term use is necessary. Do not use this medicine for longer than prescribed without medical supervision.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Applying a clean, warm compress to the affected eye can help relieve discomfort and loosen crusts.
Evidence: Well-establishedA doctor may clean the ear canal to help the drops reach the infection site.
Evidence: Well-establishedFor mild infections without significant inflammation, antibiotic-only drops may be sufficient.
Evidence: Well-established💉 Vaccination Considerations
💉 If You're Getting Vaccinated
There are no specific vaccine interactions known for short-term topical use of this medicine. However, if you are using corticosteroids for a long time or at high doses, live vaccines should be avoided because they may cause infection. Consult your doctor before receiving any vaccine while using this medicine.
📦 Storage Guide
✅ DO
Store at room temperature between 15°C and 30°C.
❌ DON'T
Do not refrigerate or freeze.
✅ DO
Keep the bottle tightly closed when not in use.
❌ DON'T
Do not leave the cap off or touch the dropper tip.
✅ DO
Protect from direct sunlight and heat.
❌ DON'T
Do not store in a hot car or near a stove.
✅ DO
Discard 4 weeks after opening.
❌ DON'T
Do not use after the expiry date or if the solution is cloudy.
✈️ Traveling with This Medicine
When traveling, carry this medicine in its original packaging with the prescription label clearly visible. Pack it in your carry-on luggage if you need it during the flight. Keep a copy of your prescription with you in case customs or security asks for it. Store it at room temperature and protect it from extreme heat or cold. If you are crossing time zones, continue your regular dosing schedule as closely as possible, but do not double up on doses. If you are traveling to a place with high humidity, keep the bottle tightly closed and avoid exposing it to direct sunlight.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: Most people notice improvement within 24 to 48 hours. If symptoms do not improve within 3 days or get worse, contact your doctor.
A: No. This medicine is for bacterial infections only. Using it for viral infections can make them worse because of the steroid component.
A: If you remember within a short time, apply the missed dose. If it is almost time for the next dose, skip it and continue your regular schedule. Do not double dose.
A: Use during pregnancy only if your doctor recommends it after weighing the benefits and risks. Inform your doctor if you are pregnant or planning pregnancy.
A: Hearing loss is rare but can occur if the eardrum is perforated and neomycin enters the inner ear. Do not use ear drops if you have a perforated eardrum unless your doctor approves.
🤔 Common Patient Concerns
🔄 Substitutes for necidex eye/ear drops
View AllAlternative brands with exact same active ingredient:
-
dekortyn n eye/ear dropsSunways India Pvt Ltd ₹8.97 70.1% CHEAPER
-
dexacort n eye/ear dropsLaborate Pharmaceuticals India Ltd ₹14.96 50.1% CHEAPER
-
cosmodex n eye dropCosmopack Pvt Ltd ₹15.00 50% CHEAPER
-
decacin b eye/ear dropsCalibre Pharmaceutical ₹15.00 50% CHEAPER
-
Retnamicin Eye/Ear DropsBiomedica International ₹19.50 35% CHEAPER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: This medicine can be used for any red eye.
Fact: This medicine is only for bacterial infections with inflammation. Using it for viral or allergic eye problems can make them worse. - Myth: Steroid eye drops are safe for long-term use.
Fact: Long-term use of steroid eye drops can increase eye pressure, cause cataracts, and lead to infections. Use only as prescribed. - Myth: Ear drops can be used even if the eardrum is perforated.
Fact: If the eardrum is perforated, neomycin can enter the inner ear and cause hearing loss. Never use without a doctor's confirmation. - Myth: You can stop using the drops as soon as symptoms improve.
Fact: Stopping early can allow the infection to return. Complete the full course as prescribed.
🔄 Alternative Options
Generic Alternatives
- Neomycin + Dexamethasone eye/ear drops
Brand Alternatives
- Dekortyn N Eye/Ear Drops