Alcaftadine (Eye Drop)

Alcaftadine is an anti-allergy eye drop used to prevent itching caused by allergic conjunctivitis.

Drug class	Dual-Action (Antihistamine + Mast Cell Stabiliser)
Type	Single
Forms	Eye Drop
Common strength	0.25%
Common Indian brands	Alcaftadine 0.25% (multiple Indian brands)
Prescription status	Prescription

What Alcaftadine is used for

Alcaftadine eye drops are prescribed to help manage and prevent the uncomfortable itching associated with allergic conjunctivitis. Allergic conjunctivitis is a common eye condition that occurs when your eyes react to allergens like pollen, dust mites, or pet dander.

• Prevention of itching in allergic conjunctivitis

How it works

Alcaftadine is a ‘dual-action’ medicine, meaning it works in two important ways to relieve eye allergies. Firstly, it acts as an antihistamine, blocking the effects of histamine – a natural substance in your body that causes allergic symptoms like itching and redness. By blocking histamine, Alcaftadine helps to reduce the immediate allergic reaction. Secondly, it also works as a mast cell stabiliser. Mast cells are special cells in your body that release histamine and other chemicals when they encounter an allergen. By stabilising these mast cells, Alcaftadine helps to prevent them from releasing these allergy-causing substances in the first place, offering longer-lasting relief and prevention of symptoms. This dual action helps to provide effective and sustained relief from allergic eye itching.

How it’s used

Alcaftadine eye drops are very simple to use. Typically, your ophthalmologist will advise you to put 1 drop into the affected eye(s) once a day. It is important to follow your doctor’s instructions precisely regarding the frequency and duration of use. Do not use more drops than prescribed, even if your symptoms feel severe, as this will not make the medicine work faster or better and could lead to unnecessary side effects. Consistency is key with this medication, so try to use it at the same time each day to maintain its protective effect.

Always follow your ophthalmologist’s exact instructions.

Brands available in India

• Alcaftadine 0.25% (multiple Indian brands)

Brand availability and pricing vary; confirm with your pharmacist.

Precautions & side effects

While Alcaftadine is generally well-tolerated, it is important to be aware of a few precautions:

• Prescription Medicine: Alcaftadine is a prescription eye medicine. It should only be used as directed by a qualified ophthalmologist. This page is for general education and is not a substitute for professional medical advice, diagnosis, or a prescription. Do not self-medicate or reuse an old prescription.
• Convenient for Children: The once-daily dosing of Alcaftadine can be particularly convenient for children, making it easier to administer and adhere to the treatment schedule. However, always ensure a doctor has prescribed it for a child.
• Contact Lenses: If you wear contact lenses, it is generally recommended to remove them before instilling eye drops and wait at least 10-15 minutes before reinserting them. Always check with your ophthalmologist for specific guidance regarding contact lens use with Alcaftadine.
• Storage: Store the eye drops as advised by your pharmacist or doctor, usually in a cool, dry place, away from direct sunlight and out of reach of children.
• Hygiene: To prevent contamination, do not touch the tip of the dropper to any surface, including your eye. Always replace the cap tightly after use.
• Side Effects: While not explicitly listed in the clinical facts, like all medications, eye drops can sometimes cause temporary stinging, burning, or blurred vision immediately after instillation. If you experience any persistent or severe side effects, or if your symptoms worsen, contact your ophthalmologist immediately.

Understanding Allergic Conjunctivitis

Allergic conjunctivitis is a very common eye condition that affects millions of people in India and worldwide. It happens when your eyes come into contact with something you are allergic to, called an allergen. Common allergens include pollen from trees, grasses, and weeds, dust mites found in homes, pet dander (tiny flakes of skin from animals), and sometimes even certain cosmetics or contact lens solutions. When these allergens touch the surface of your eye, your body’s immune system overreacts, releasing chemicals like histamine. This release of chemicals causes the blood vessels in your eyes to swell and become irritated, leading to the classic symptoms of allergic conjunctivitis. These symptoms typically include intense itching, redness of the white part of the eye (sclera) and the inner eyelids, watery discharge, and sometimes a gritty or burning sensation. Your eyelids might also become swollen. While usually not serious or vision-threatening, allergic conjunctivitis can be very uncomfortable and disruptive to daily life. It often affects both eyes, though one eye might be more affected than the other. Managing allergic conjunctivitis often involves avoiding the allergens as much as possible, along with using prescribed eye drops like Alcaftadine to relieve and prevent symptoms. If you suspect you have allergic conjunctivitis, it’s always best to consult an ophthalmologist for an accurate diagnosis and appropriate treatment plan.

Correctly Using Eye Drops

Using eye drops correctly is crucial for them to work effectively and to prevent contamination. Here’s a step-by-step guide:

1. Wash Your Hands: Always start by thoroughly washing your hands with soap and water. This is the most important step to prevent germs from entering your eye.
2. Prepare the Bottle: Gently shake the bottle if instructed by your doctor or pharmacist. Remove the cap and place it on a clean surface, making sure the tip of the dropper does not touch anything.
3. Position Yourself: You can either stand or sit comfortably, or even lie down. Tilt your head back slightly.
4. Create a Pouch: Gently pull down your lower eyelid with one finger to create a small pouch or pocket.
5. Instil the Drop: Hold the dropper bottle upside down with your other hand, positioning the tip directly over your eye. Do not let the tip touch your eye, eyelid, or eyelashes. Look upwards and gently squeeze the bottle to release a single drop into the pouch you created.
6. Close Your Eye: Immediately after the drop goes in, close your eye gently for 1 to 2 minutes. Do not squeeze your eye shut or blink excessively, as this can push the medicine out.
7. Apply Pressure (Optional but Recommended): While your eye is closed, gently press your finger against the inner corner of your eye, near your nose. This helps to block the tear duct and prevents the medicine from draining away too quickly, allowing it more time to work in your eye.
8. Wipe Excess: Gently blot any excess liquid around your eye with a clean tissue.
9. Replace Cap: Replace the cap on the bottle immediately and tightly.
10. Wash Hands Again: Wash your hands again to remove any medicine residue.

If you need to use more than one type of eye drop, wait at least 5-10 minutes between different medications to ensure each drop has enough time to be absorbed.

General Eye Hygiene and When to Seek Help

Maintaining good eye hygiene is essential, especially when dealing with eye conditions or using eye medications. Always ensure your hands are clean before touching your eyes or eye drop bottles. Never share your eye drops with anyone else, even if they have similar symptoms, as this can spread infections. Store your eye drops as directed by your doctor or pharmacist, usually in a cool, dry place, away from direct sunlight and out of reach of children. Always check the expiry date on the bottle and discard any opened bottle after the recommended period (usually 28 days after opening, unless otherwise specified), even if there is still medicine left. Using expired or contaminated eye drops can be harmful.

While Alcaftadine is effective for allergic conjunctivitis, it’s important to know when to seek further medical attention. You should contact your ophthalmologist immediately if:

• Your symptoms worsen or do not improve after a few days of using the eye drops as prescribed.
• You experience severe eye pain, sudden changes in vision, or extreme sensitivity to light.
• You notice any discharge from your eye that is thick, yellow, or green, as this could indicate an infection.
• You develop new or unusual symptoms that you haven’t experienced before.
• You suspect an allergic reaction to the eye drops themselves (e.g., increased redness, swelling, or itching after using the drops).

Remember, your ophthalmologist is the best person to guide you on your eye health. Regular check-ups and prompt attention to any concerning symptoms are key to maintaining good vision and healthy eyes.

Frequently asked questions

What is Alcaftadine used for?

Alcaftadine eye drops are used to prevent itching associated with allergic conjunctivitis.

How does Alcaftadine work?

Alcaftadine is a dual-action medicine. It works as an antihistamine to block allergy-causing chemicals and as a mast cell stabiliser to prevent their release, providing relief from itching.

What are the common Indian brands for Alcaftadine?

Alcaftadine 0.25% is available under multiple Indian brands. Your doctor will prescribe a specific brand.

How should I use Alcaftadine eye drops?

You should use 1 drop in the affected eye(s) once a day, or exactly as directed by your ophthalmologist. Always wash your hands before and after use, and do not touch the dropper tip to your eye or any surface.

Do I need a prescription for Alcaftadine?

Yes, Alcaftadine is a prescription eye medicine and should only be used as directed by a qualified ophthalmologist.

Are there any special precautions I should take with Alcaftadine?

Always use Alcaftadine only as prescribed by your doctor. The once-daily dosing is convenient, especially for children. If you wear contact lenses, remove them before using the drops and wait at least 10-15 minutes before reinserting them. Do not self-medicate or reuse old prescriptions.

References

1. Eye Allergies – American Academy of Ophthalmology
2. Eye Diseases – MedlinePlus
3. Learn about eye health – National Eye Institute (NIH)
4. Blindness and vision impairment – World Health Organization
5. StatPearls – NCBI Bookshelf

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Medically reviewed by Dr. C Jagadesh Reddy, Chief Surgeon: Cornea, Cataract and Refractive Surgery — last reviewed 2026-07-28.

This page is for general education only and is not a substitute for professional medical advice, diagnosis or treatment. Never self-medicate or reuse an old prescription. Always consult a qualified ophthalmologist before starting, changing or stopping any eye medicine.