dokay eye/ear drops - Chloramphenicol (0.5% w/v) + Dexamethasone (0.1% w/v) medicine

Renidex Eye/Ear Drops: Comprehensive Medicine Guide

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🏭 S&S Health Care 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 23, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for approved indications.
Reviewed by
SaathiMed Expert Panel | Sep 23, 2026

When to Call Your Doctor IMMEDIATELY

  • Severe eye pain or vision loss
  • Swelling of the face, lips, or throat
  • Difficulty breathing
  • Signs of bone marrow suppression: unusual tiredness, easy bruising, or bleeding
  • New or worsening ear pain, hearing loss, or discharge
  • Persistent eye redness or irritation despite treatment

If experiencing severe symptoms, call emergency services immediately.

What is dokay eye/ear drops used for?

This medicine is a combination antibiotic and steroid eye/ear drop used to treat bacterial infections with inflammation. It contains chloramphenicol (antibiotic) and dexamethasone (steroid). It is applied topically to the affected eye or ear as prescribed by a doctor.

  • Generic Name: Chloramphenicol (0.5% w/v) + Dexamethasone (0.1% w/v)
  • Manufacturer: S&S Health Care
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 dokay eye/ear drops के बारे में (Hindi Summary)

उपयोग: यह दवा आंख और कान के बैक्टीरियल संक्रमण के इलाज के लिए इस्तेमाल की जाती है, जिसमें सूजन भी होती है। इसमें क्लोरैम्फेनिकॉल (एंटीबायोटिक) और डेक्सामेथासोन (स्टेरॉयड) होते हैं। यह आंखों की लालिमा, दर्द, सूजन और कान के संक्रमण में राहत देती है।

साइड इफेक्ट्स: आम दुष्प्रभावों में आंखों में जलन, धुंधली दृष्टि, मुंह में कड़वा स्वाद शामिल हैं। गंभीर दुष्प्रभावों में एलर्जी, आंखों का दबाव बढ़ना, मोतियाबिंद, और संक्रमण का बढ़ना शामिल है। लंबे समय तक उपयोग से रक्त विकार भी हो सकते हैं।

सुरक्षा सलाह: इस दवा का उपयोग केवल डॉक्टर के निर्देशानुसार करें। ड्रॉपर की नोक को आंख या कान को न छुएं। उपयोग से पहले और बाद में हाथ धोएं। निर्धारित अवधि से अधिक उपयोग न करें। गर्भवती या स्तनपान कराने वाली महिलाएं डॉक्टर से सलाह लें।

💡 Did You Know? The first generic medicine was introduced in India in 1970 after the Patents Act was amended.

💊 dokay eye/ear drops Uses & Benefits

[{"condition":"Bacterial conjunctivitis","description":"Used to treat bacterial eye infections with associated inflammation, reducing redness, discharge, and discomfort.","evidence":"Well-established"},{"condition":"Blepharitis","description":"Helps control bacterial infection and inflammation of the eyelids.","evidence":"Well-established"},{"condition":"Otitis externa","description":"Used for bacterial infections of the outer ear canal with inflammation, reducing pain and swelling.","evidence":"Well-established"},{"condition":"Post-operative eye inflammation","description":"May be prescribed after eye surgery to prevent infection and reduce inflammation.","evidence":"Established"}]

Off-label uses: [{"condition":"Allergic conjunctivitis with secondary bacterial infection","description":"Sometimes used when both allergic inflammation and bacterial infection are suspected.","evidence":"Limited"}]

Primary treatment for: Bacterial eye and ear infections with inflammation

Also treats: Bacterial conjunctivitis, Blepharitis, Otitis externa

📋 Drug Information

Generic Name(s)Chloramphenicol (0.5% w/v) + Dexamethasone (0.1% w/v)
Brand Namedokay eye/ear drops
ManufacturerS&S Health Care
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassOPHTHAL OTOLOGICALS
Action Class
Route of AdministrationOphthalmic or Otic (topical application to the eye or ear)
StorageStore at room temperature (15-30°C). Protect from light and freezing. Keep the container tightly closed when not in use.
Shelf Life24 months from the date of manufacture, unless otherwise specified on the packaging.
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, ear, or any surface.
3
If you wear contact lenses, remove them before using eye drops and wait 15 minutes before reinserting.
4
Do not use this medicine for longer than prescribed, as prolonged use can cause serious side effects.
5
If symptoms do not improve within 7 days, consult your doctor.
6
Report any signs of allergic reaction, such as rash, itching, or swelling, immediately.
7
For ear drops, warm the bottle in your hand for a few minutes to reduce dizziness.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

Eye redness and discharge
This medicine is commonly prescribed for bacterial conjunctivitis.
Likely Use
Ear pain and itching
This medicine is used for otitis externa.
Likely Use
Blurred vision
This medicine may cause temporary blurred vision but is not used to treat it.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionChloramphenicol and dexamethasone are absorbed systemically to a limited extent after topical ocular or otic administration. Systemic absorption may occur, especially if the corneal epithelium is damaged or if the ear canal mucosa is inflamed. However, significant systemic levels are unlikely with normal use.
DistributionAfter absorption, chloramphenicol distributes widely into body tissues and fluids, including the cerebrospinal fluid. Dexamethasone also distributes widely, with a volume of distribution of approximately 1 L/kg. Both drugs cross the placenta and are excreted in breast milk.
Protein BindingChloramphenicol is approximately 50-60% bound to plasma proteins. Dexamethasone is about 77% bound to plasma proteins, primarily albumin.
MetabolismChloramphenicol is primarily metabolized in the liver by glucuronidation to chloramphenicol glucuronide. Dexamethasone is metabolized in the liver, mainly by CYP3A4, to inactive metabolites.
Half-LifeThe elimination half-life of chloramphenicol is approximately 1.5 to 3.5 hours in adults with normal liver function. The biological half-life of dexamethasone is approximately 36 to 54 hours.
ExcretionChloramphenicol and its metabolites are excreted primarily in the urine, with a small amount in bile and feces. Dexamethasone metabolites are excreted mainly in the urine.
BioavailabilitySystemic bioavailability following topical ocular administration is low but can be variable. For otic use, systemic absorption is also minimal but may be increased if the tympanic membrane is perforated.
Onset of ActionThe anti-inflammatory effects of dexamethasone may begin within hours, while the antibacterial effects of chloramphenicol start as soon as adequate concentrations are achieved at the site of infection.
Peak Plasma TimeNot established from the available information for topical administration.
Duration of ActionThe anti-inflammatory effect of dexamethasone can last for hours to days after application. The antibacterial effect of chloramphenicol persists as long as therapeutic concentrations are maintained.

How It Works

This medicine combines two active ingredients with complementary mechanisms. Chloramphenicol is a bacteriostatic antibiotic that binds reversibly to the 50S ribosomal subunit of susceptible bacteria, inhibiting peptidyl transferase activity and thereby blocking protein synthesis. This prevents bacterial growth and multiplication. Dexamethasone is a synthetic glucocorticoid that binds to intracellular glucocorticoid receptors, leading to suppression of inflammatory mediators such as prostaglandins, leukotrienes, and cytokines. It reduces edema, fibrin deposition, capillary dilation, and migration of inflammatory cells. Together, they provide antibacterial and anti-inflammatory effects at the site of application.

Mechanism Steps

1
Chloramphenicol binds to bacterial ribosome: Chloramphenicol reversibly binds to the 50S subunit of the bacterial ribosome, specifically inhibiting the peptidyl transferase enzyme.
2
Inhibition of protein synthesis: This binding prevents the formation of peptide bonds between amino acids, halting bacterial protein synthesis and stopping bacterial growth.
3
Dexamethasone binds to glucocorticoid receptor: Dexamethasone enters cells and binds to the cytoplasmic glucocorticoid receptor, causing it to translocate into the nucleus.
4
Suppression of inflammatory genes: In the nucleus, the dexamethasone-receptor complex inhibits the transcription of pro-inflammatory genes and promotes the expression of anti-inflammatory proteins.
5
Reduction of inflammation: This leads to decreased production of inflammatory mediators, reduced capillary permeability, and less migration of immune cells to the site of infection.

💡 How to Take dokay eye/ear drops

Strength: Chloramphenicol 0.5% w/v + Dexamethasone 0.1% w/v eye/ear drops.

1Wash your hands thoroughly with soap and water.
2For eye drops: Tilt your head back, pull down the lower eyelid to form a pouch, and squeeze one drop into the pouch. Close your eye gently for 1-2 minutes. Do not blink or rub your eye.
3For ear drops: Lie on your side with the affected ear facing up. Gently pull the earlobe back and up (for adults) or back and down (for children) to straighten the ear canal. Instill the drops and stay in this position for 2-3 minutes.
4Replace the cap tightly after use. Do not touch the dropper tip.
5Wash your hands again after application.

Dosage Information

Adult DosageFor eye infections: Instill 1-2 drops into the affected eye(s) every 4 to 6 hours, or as directed by your doctor. For ear infections: Instill 2-3 drops into the affected ear(s) every 6 to 8 hours, or as directed. The frequency and duration of treatment depend on the severity of the infection and your response to therapy. 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 established for elderly patients. Use with caution and monitor for side effects.
Renal ImpairmentNo specific dosage adjustments are established for patients with renal impairment. Use with caution.
Hepatic ImpairmentNo specific dosage adjustments are established for patients with hepatic impairment. Use with caution due to potential chloramphenicol accumulation.
Maximum Daily DoseNot established from the available information. Use as prescribed by your doctor.

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 dokay eye/ear drops

✅ Common Side Effects

Temporary stinging or burning (Common (5-10%))
Usually resolves within minutes. If persistent or severe, consult your doctor.
Blurred vision (Common (5-10%))
Avoid driving or operating machinery until vision clears. If persistent, consult your doctor.
Bad taste in mouth (Common (5-10%))
This is temporary and harmless. Drinking water may help.
Eye irritation (Common (5-10%))
If irritation persists or worsens, contact your doctor.

🚨 Serious Side Effects

Allergic reaction (rash, itching, swelling, severe dizziness, trouble breathing) (Rare (<0.1%))
Seek immediate medical attention.
Increased intraocular pressure or glaucoma (Uncommon (0.1-1%))
Requires monitoring by an eye specialist. Report any eye pain or vision changes.
Cataract formation (Uncommon (0.1-1%))
Long-term use may increase risk. Regular eye exams are recommended.
Secondary fungal or viral infection (Uncommon (0.1-1%))
If infection worsens or new symptoms appear, consult your doctor.
Bone marrow suppression or aplastic anemia (rare with topical use) (Very rare (<0.01%))
Report unusual tiredness, bruising, or bleeding immediately.

⚠️ Rare Side Effects

Aplastic anemia
Seek immediate medical attention if you experience fatigue, easy bruising, or recurrent infections.
Optic neuritis
Report any vision loss or eye pain immediately.
Peripheral neuropathy
Report numbness, tingling, or weakness in hands or feet.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Other corticosteroids Major
CYP3A4 inhibitors Major
CYP3A4 inducers Moderate
Anticholinergics Moderate

🚨 Major Interactions

  • Other corticosteroids (e.g., prednisolone)
  • CYP3A4 inhibitors (e.g., ketoconazole, ritonavir)

⚡ Moderate Interactions

  • CYP3A4 inducers (e.g., rifampin, carbamazepine)
  • Anticholinergic agents (e.g., atropine)

🍷 Alcohol Interaction

No specific interaction is established between this medicine and alcohol. However, alcohol may worsen underlying conditions or increase the risk of side effects. It is advisable to limit alcohol consumption while using this medicine.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypersensitivity to chloramphenicol, dexamethasone, or any component of the formulation","Viral diseases of the cornea and conjunctiva, including herpes simplex keratitis, vaccinia, and varicella","Fungal diseases of the eye or ear","Untreated bacterial infections (steroids may mask or worsen infection)","Perforated tympanic membrane (for otic use)"]

⚠️ Warnings & Precautions

["Prolonged use may result in overgrowth of non-susceptible organisms, including fungi.","Steroids may increase intraocular pressure and risk of glaucoma and cataract.","Chloramphenicol can cause bone marrow suppression; avoid prolonged use.","Do not use if the solution is cloudy or discolored.","Avoid contact of dropper tip with any surface to prevent contamination.","Not for injection or oral use.","Use with caution in patients with a history of herpes simplex infection."]

🤱 Lactation Safety

It is not known whether chloramphenicol and dexamethasone are excreted in human milk after topical ocular or otic administration. Because many drugs are excreted in human milk, caution should be exercised when this medicine is used by a nursing woman. Consult your doctor.

💊 Overdose Management

Overdose from topical application is unlikely. If accidental ingestion occurs, seek medical attention immediately. Symptoms of chloramphenicol overdose may include nausea, vomiting, and bone marrow suppression. Dexamethasone overdose may cause systemic corticosteroid effects. Treatment is supportive and symptomatic.

⏰ 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 to catch up.

Additional Safety Advice

General Safety

Use this medicine only for the eye or ear as directed by your doctor. Do not touch the dropper tip to any surface, including your eye or ear, to avoid contamination. Wash your hands before and after use. If you wear contact lenses, remove them before applying eye drops and wait at least 15 minutes before reinserting. Do not use this medicine for more than the prescribed duration, as prolonged use can lead to serious side effects. Avoid driving or operating heavy machinery if you experience blurred vision after application. Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding. Do not use this medicine if the solution is cloudy or has particles. Keep out of reach of children. Do not share this medicine with others, even if they have similar symptoms.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more susceptible to side effects such as increased intraocular pressure and cataracts. Use with caution and monitor regularly.

🤰 Pregnancy Planning (TTC)

Consult your doctor if you are planning to become pregnant. This medicine should be used during pregnancy only if clearly needed.

🏥 Post-Surgery Considerations

This medicine may be prescribed after eye surgery to prevent infection and reduce inflammation. Use exactly as directed by your surgeon.

🦷 Dental Procedures

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

💚 Lifestyle Tips for Better Results

🏃
Maintain good hand hygiene to prevent reinfection.
🥗
Avoid touching your eyes or ears with unclean hands.
😴
Do not share towels or pillows with others during infection.
💧
Follow a healthy diet to support immune function.
🧘
Get adequate rest to aid recovery.

🏋️ Exercise Considerations

No specific exercise restrictions are established. However, if you experience blurred vision after applying eye drops, avoid activities that require clear vision until it clears.

🥗 Diet Recommendations

Stay well hydrated.
Include foods rich in vitamin A and C for eye health.
Avoid excessive sugar and processed foods.

💼 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. Otherwise, it should not significantly impact your daily activities.

🛑 When to Stop This Medicine

Stop using this medicine only after completing the prescribed course or as directed by your doctor. Do not stop abruptly without consulting your doctor, as it may lead to recurrence of infection.

📅 Long-Term Use Effects

Long-term use of this medicine can lead to increased intraocular pressure, glaucoma, cataract formation, and secondary infections. Prolonged use of chloramphenicol may rarely cause bone marrow suppression. Regular monitoring by an eye specialist is recommended if long-term use is necessary.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Warm compresses

Can help relieve eye discomfort and discharge in conjunctivitis.

Evidence: Well-established
Ear cleaning by doctor

Professional cleaning of the ear canal can help remove debris in otitis externa.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

No specific interaction with vaccines is established. However, corticosteroids may reduce vaccine efficacy if used systemically. Topical use is unlikely to affect vaccination.

📦 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

✈️ Traveling with This Medicine

Carry this medicine in its original packaging with the prescription label intact. Bring a copy of your prescription to avoid issues at customs. Store at room temperature and protect from light and freezing. If traveling across time zones, continue your regular dosing schedule as close as possible. Do not leave it 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 was prescribed this medicine for redness and discharge in her right eye. She applied the drops every 6 hours as directed. Within 3 days, the redness and discharge significantly reduced. She completed the full course as prescribed and the infection cleared completely.
💡 Lesson: Consistent use as prescribed leads to effective resolution of bacterial eye infections.
👤 A 50-year-old man with otitis externa
He experienced severe ear pain and itching. His doctor prescribed this medicine as ear drops. He used them twice daily for 7 days. The pain and swelling improved within 2 days, and the infection resolved by the end of the course.
💡 Lesson: Proper application technique and completing the full course are essential for ear infections.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: You may start feeling relief within a few hours to a day, but complete resolution of infection may take several days. Finish the full course as prescribed.

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

A: No, this medicine is only for bacterial infections. Using it for viral infections can worsen the condition.

Q: Is it safe to use while pregnant?

A: Consult your doctor before use. It is not recommended unless clearly needed.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I use this medicine for my child?
  • What if I accidentally swallow this medicine?
  • Can I use this medicine with other eye drops?
  • How long does it take to work?
  • Is it safe to use expired drops?

🔄 Substitutes for dokay eye/ear 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 be used for any eye redness.
    Fact: It is only for bacterial infections with inflammation. Using it for viral or allergic conditions can worsen the problem.
  • Myth: It is safe to use for long periods.
    Fact: Prolonged use can cause serious side effects like glaucoma, cataracts, and fungal infections.
  • Myth: It can be shared with family members.
    Fact: It is prescription-only and should not be shared, as the condition may be different.

🔄 Alternative Options

Generic Alternatives

  • Chloramphenicol 0.5% + Dexamethasone 0.1% eye/ear drops

Brand Alternatives

  • Renidex eye/ear drops

📊 Comparison with Similar Medicines

[{"medicine":"This medicine","active_ingredients":"Chloramphenicol + Dexamethasone","spectrum":"Broad-spectrum antibiotic + steroid","indications":"Bacterial eye/ear infections with inflammation"},{"medicine":"Tobramycin + Dexamethasone","active_ingredients":"Tobramycin + Dexamethasone","spectrum":"Aminoglycoside antibiotic + steroid","indications":"Bacterial eye infections with inflammation"},{"medicine":"Ciprofloxacin + Dexamethasone","active_ingredients":"Ciprofloxacin + Dexamethasone","spectrum":"Fluoroquinolone antibiotic + steroid","indications":"Bacterial eye infections with inflammation"}]

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