alcatop eye drop - Alcaftadine (0.25% w/v) medicine

Alcatop Eye Drop

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🏭 Sunways India Pvt Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Nov 11, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: High
Dr. Ravishankar Kumar
Medically Reviewed by Dr. Ravishankar Kumar ✓ Verified Doctor
B.A.M.S. (RMLAU Ayodhya) • Ex-Balrampur Hospital, Lucknow
Dr. Ravishankar Kumar
Clinically Verified by Dr. Ravishankar Kumar (B.A.M.S., RMLAU) — View Medical Verification Profile ↗
Clinical Background: Balrampur Hospital, Lucknow (Emergency Medicine) & SCPM Hospital | Standards: CDSCO, Indian Pharmacopoeia (IP) & WHO

When to Call Your Doctor IMMEDIATELY

  • Severe eye pain or persistent redness
  • Sudden vision loss or blurred vision that does not resolve
  • Swelling of face, lips, or throat
  • Difficulty breathing or swallowing
  • Signs of eye infection such as discharge or crusting
  • Worsening of symptoms after starting the medicine

If experiencing severe symptoms, call emergency services immediately.

What is alcatop eye drop used for?

Alcarex eye drop contains alcaftadine 0.25%, an antihistamine used to treat itching and redness due to allergic conjunctivitis. It works by blocking histamine and stabilizing mast cells. Use one drop in each affected eye once daily.

  • Generic Name: Alcaftadine
  • Manufacturer: Sunways India Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 alcatop eye drop के बारे में (Hindi Summary)

उपयोग: यह दवा एलर्जिक कंजंक्टिवाइटिस (आंखों की एलर्जी) से होने वाली खुजली, लालिमा और सूजन को कम करने के लिए इस्तेमाल की जाती है। यह एंटीहिस्टामिन और मास्ट सेल स्टेबलाइज़र है जो आंखों में हिस्टामिन के प्रभाव को रोकती है।

साइड इफेक्ट्स: आम दुष्प्रभावों में आंखों में जलन, चुभन, सिरदर्द और धुंधली दृष्टि शामिल हैं। गंभीर दुष्प्रभाव दुर्लभ हैं लेकिन यदि आंखों में तेज दर्द, सूजन या सांस लेने में कठिनाई हो तो तुरंत डॉक्टर से मिलें।

सुरक्षा सलाह: इस दवा का उपयोग करने से पहले अपने डॉक्टर को गर्भावस्था, स्तनपान या किसी अन्य दवा के बारे में बताएं। कॉन्टैक्ट लेंस पहनने से पहले उन्हें निकालें और दवा डालने के 10 मिनट बाद ही वापस लगाएं। ड्रॉपर की टिप को आंख या किसी सतह से न छुएं।

💡 Did You Know? India has the highest number of USFDA-compliant plants outside the USA.

alcatop eye drop Uses & Benefits

Seasonal allergic conjunctivitis Well-established

Relieves itching, redness, and tearing associated with seasonal allergies.

Perennial allergic conjunctivitis Well-established

Provides relief from year-round allergic eye symptoms.

Off-Label & Investigational Uses:

Vernal keratoconjunctivitis Limited (Off-label)

May be used off-label to reduce itching and inflammation in severe allergic eye disease.

Primary Treatment for: Allergic conjunctivitis
Also Treats:
Seasonal allergic conjunctivitis Perennial allergic conjunctivitis

📋 Drug Information

Generic Name(s)Alcaftadine
Brand NameAlcarex Eye Drop
ManufacturerSunways India Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassOPHTHAL
Action ClassH1 Antihistaminics (second Generation)
Route of AdministrationOphthalmic
StorageStore at room temperature (15-30°C). Protect from light and moisture. Keep the bottle tightly closed when not in use.
Shelf Life24 months from the date of manufacture.
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
Instruct patients to remove contact lenses before application and wait 10 minutes before reinsertion.
2
Advise patients not to touch the dropper tip to any surface to prevent contamination.
3
Recommend using the drop at the same time each day for best results.
4
Inform patients that relief may last up to 16 hours, so once-daily dosing is sufficient.
5
Caution patients about temporary blurred vision and advise against driving if affected.
6
Tell patients to consult a doctor if symptoms persist beyond 72 hours.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Eye itching
This medicine is commonly prescribed for allergic eye itching.
Likely Use
✅
Eye redness
This medicine helps reduce redness due to allergies.
Likely Use
❌
Eye pain
This medicine is not for eye pain; consult a doctor.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionSystemic absorption following topical ocular administration is minimal. Plasma concentrations are typically below the limit of quantification.
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 ActionRapid, within 3-5 minutes after instillation.
Peak Plasma TimeNot established from the available information.
Duration of ActionUp to 16 hours.

How It Works

Alcaftadine is a dual-acting antihistamine and mast cell stabilizer. It blocks histamine H1 receptors and prevents the release of histamine from mast cells, thereby reducing allergic symptoms.

Mechanism Steps

1
Histamine H1 receptor antagonism: Alcaftadine binds to H1 receptors on ocular tissues, preventing histamine from triggering allergic responses such as itching and vasodilation.
2
Mast cell stabilization: Alcaftadine stabilizes mast cells, reducing the release of histamine and other inflammatory mediators like leukotrienes and prostaglandins.
3
Reduction of inflammatory mediators: By inhibiting mast cell degranulation, alcaftadine decreases the recruitment of inflammatory cells and reduces ocular redness and swelling.

💡 How to Take alcatop eye drop

Strength: Alcaftadine 0.25% w/v ophthalmic solution.

1Wash your hands thoroughly before use.
2Tilt your head back and pull down your lower eyelid to form a pouch.
3Hold the dropper above your eye and squeeze gently to release one drop.
4Close your eye and press gently on the inner corner for 1-2 minutes to prevent drainage.
5Replace the cap tightly after use.

Dosage Information

Adult DosageThe usual adult dose is one drop in each affected eye once daily. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. Do not exceed the recommended dose.
Pediatric DosageThe safety and efficacy of this medicine in children under 2 years of age have not been established. For children 2 years and older, the dose is one drop in each affected eye once daily. Consult a pediatrician for appropriate use.
Elderly DosageNo specific dose adjustment is required for elderly patients. However, use with caution and under medical supervision.
Renal ImpairmentNo dose adjustment is required for renal impairment as systemic absorption is minimal.
Hepatic ImpairmentNo dose adjustment is required for hepatic impairment as systemic absorption is minimal.
Maximum Daily DoseOne drop in each affected eye once daily.

Dosage Timeline

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

⏰ What to Do If You Miss a Dose

📌 Less than 12 hours have passed since the missed dose
→ Take the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than 12 hours have passed since the missed dose
→ Skip the missed dose.
💡 Do not double dose to catch up.

⚠️ Side Effects of alcatop eye drop

✅ Common Side Effects

Eye irritation (Common (1-10%))
Usually resolves on its own. If persistent, consult your doctor.
Burning or stinging (Common (1-10%))
May occur upon instillation. If severe or persistent, consult your doctor.
Headache (Common (1-10%))
Usually mild. If it persists, consult your doctor.

🚨 Serious Side Effects

Severe allergic reaction (Rare (<0.1%))
Seek immediate medical attention if you experience swelling of face, lips, or throat, difficulty breathing, or severe rash.
Eye pain or persistent redness (Rare (<0.1%))
Stop using the medicine and consult an eye specialist promptly.

⚠️ Rare Side Effects

Blurred vision
Avoid driving or operating machinery until vision clears. If persistent, consult your doctor.
Taste disturbance
Usually temporary. If bothersome, consult your doctor.

Consult your doctor if you experience any unusual symptoms.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypersensitivity to alcaftadine or any component of the formulation.","Not for injection or oral use."]

⚠️ Warnings & Precautions

["Do not touch the dropper tip to any surface to avoid contamination.","Remove contact lenses before use and wait 10 minutes before reinsertion.","If symptoms persist or worsen, consult your doctor.","Do not use if the solution is cloudy or discolored.","Keep out of reach of children."]

🤱 Lactation Safety

It is not known whether alcaftadine is excreted in human milk. Consult your doctor before using this medicine while breastfeeding.

💊 Overdose Management

Overdose with this medicine is unlikely due to its topical route. If accidental ingestion occurs, seek medical attention immediately. In case of excessive eye exposure, flush the eye with water and consult a doctor.

⏰ 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 pregnant, planning to become pregnant, or breastfeeding. Do not touch the tip of the dropper to any surface, including your eye, to avoid contamination. Remove soft contact lenses before applying this medicine and wait at least 10 minutes before reinserting them. Do not use this medicine if the solution changes color or becomes cloudy. Keep this medicine out of reach of children. If you wear contact lenses, consult your eye care professional about the appropriate lens wearing schedule. Do not use this medicine for longer than prescribed without consulting your doctor. If your symptoms do not improve within 72 hours or worsen, seek medical advice.

👴 Special Considerations for Elderly

💡 For Patients Above 65

No specific precautions for elderly patients. Use as directed by your doctor.

🤰 Pregnancy Planning (TTC)

Consult your doctor if you are pregnant, planning to become pregnant, or breastfeeding. The safety of this medicine during pregnancy has not been fully established.

🏥 Post-Surgery Considerations

Consult your eye surgeon before using this medicine after eye surgery. It may not be suitable immediately after certain procedures.

🦷 Dental Procedures

No specific considerations for dental procedures. Inform your dentist about all medicines you are using.

💚 Lifestyle Tips for Better Results

🏃
Avoid rubbing your eyes, as it can worsen allergy symptoms.
🥗
Use cool compresses to soothe irritated eyes.
😴
Keep windows closed during high pollen seasons.
💧
Use air purifiers to reduce indoor allergens.
🧘
Wash your hands frequently to avoid introducing irritants.

🏋️ Exercise Considerations

No specific exercise restrictions. If you experience blurred vision after application, avoid activities requiring clear vision until it resolves.

🥗 Diet Recommendations

Include omega-3 rich foods like fish to support eye health.
Stay hydrated to maintain tear production.
Limit processed foods that may promote inflammation.

💼 Impact on Daily Work & Life

This medicine may cause temporary blurred vision. Avoid driving or operating heavy machinery immediately after use until your vision is clear. Otherwise, it does not affect daily activities.

🛑 When to Stop This Medicine

Stop using this medicine and consult your doctor if your symptoms do not improve within 72 hours, if they worsen, or if you experience any serious side effects. Do not stop prescribed treatment without medical advice.

📅 Long-Term Use Effects

Long-term use of this medicine is generally safe. However, if you use it for extended periods, monitor for any changes in vision or persistent eye irritation. Consult your eye doctor regularly to ensure it remains appropriate for your condition.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Avoidance of allergens

Identifying and avoiding triggers such as pollen, dust, or pet dander can reduce symptoms.

Evidence: Well-established
Cold compresses

Applying cold compresses to closed eyes can soothe itching and reduce swelling.

Evidence: Well-established
Oral antihistamines

Systemic antihistamines may help if eye symptoms are part of a broader allergic response.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

No known interaction 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

✈️ Traveling with This Medicine

Carry this medicine in its original packaging with a copy of your prescription. Store at room temperature and protect from light. If traveling across time zones, continue once-daily dosing at your usual time. Declare it at customs if required. Keep it in your carry-on luggage to avoid extreme temperatures.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 35-year-old woman with seasonal allergies
She experienced itchy, watery eyes every spring. Her doctor prescribed this medicine once daily. Within a few days, her symptoms improved significantly. She noted that removing her contact lenses before application was crucial.
💡 Lesson: Consistent once-daily use and proper contact lens handling lead to effective relief.
👤 A 10-year-old boy with perennial allergic conjunctivitis
He had year-round eye itching and redness. His pediatrician recommended this medicine. His parents applied it every morning. After two weeks, his symptoms were well controlled, and he could play outdoors comfortably.
💡 Lesson: This medicine is effective and well-tolerated in children over 2 years when used as directed.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine starts working within 3-5 minutes after instillation, providing relief that lasts up to 16 hours.

Q: Can I use this medicine every day?

A: Yes, it is designed for once-daily use. However, consult your doctor if you need to use it for more than a few weeks.

Q: Is this medicine safe for children?

A: It is safe for children aged 2 years and older when used as directed by a pediatrician.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I use this medicine long-term?
  • Will it affect my vision?
  • Can I drive after using this medicine?
  • Does it interact with other eye drops?
  • What if I miss a dose?
  • Can I use it with contact lenses?

🔄 Substitutes for alcatop eye drop

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: Alcaftadine eye drops can be used for any eye redness.
    Fact: It is specifically for allergic conjunctivitis and not for redness due to infection or dryness.
  • Myth: You can use alcaftadine eye drops while wearing contact lenses.
    Fact: Contact lenses should be removed before application and reinserted after 10 minutes.

🔄 Alternative Options

Generic Alternatives

  • Alcaftadine ophthalmic solution 0.25%

Brand Alternatives

  • Lastacaft
  • Alcafree
  • Alcafast

📊 Comparison with Similar Medicines

MedicineClassDurationFrequency
AlcaftadineAntihistamine/mast cell stabilizerUp to 16 hoursOnce daily
OlopatadineAntihistamine/mast cell stabilizerUp to 24 hoursOnce or twice daily
KetotifenAntihistamine/mast cell stabilizer8-12 hoursTwice daily

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