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Zaditor Eye Drops (Ketotifen)

Also Known as Zaditen

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What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


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Zaditor eye drops are an allergic conjunctivitis treatment medication available by prescription and used to treat itchy eyes causes by seasonal allergies or incidental exposure to other allergens. Ketotifen is an antihistamine and mast cell stabilizer that works by reducing the release of histamines and making it so that mast cells in the eyes are less inflamed by the levels of histamines that are present. Zaditor eye drops usage is for provide fast relief when itchy eyes is the most pronounced symptom when a person experiences allergy attacks. Buy Zaditor eye drops from Canada and Canpharm and get the best price on it.

What is Allergic Conjunctivitis?

Allergic conjunctivitis is acute, intermittent, or chronic inflammation of the eyes caused by exposure to an allergen and resulting in redness and watering of the eye along with intense itching. Allergic conjunctivitis can also have nasal symptoms and for most people a standard OTC antihistamine provides sufficient relief from allergic conjunctivitis but for some people a stronger Rx one like Emadine may be required.

Buy Zaditor Eye Drops (Ketotifen) online from online Canadian Pharmacy |


Standard Zaditor eye drops dosage is to apply 1 drop to affected eyes 2x daily and at 8-to-12-hour intervals depending on what is indicated in your prescription

Wash hands before application and do not touch dropper tip or allow it to touch any surface. Replace cap on dropper after use.


The active ingredient in Zaditor Eye Drops is Ketotifen


Let your doctor know of any history eye disorders like glaucoma or cataracts before starting on Zaditor eye drops

Users may experience temporarily blurred vision after applying these medicated eye drops

Children under the age of 10 should only use this medication under parent supervision

Keep in cool, dry place and be aware of medication expiry date


There are no drug interaction risks established between Zaditor and other Rx medications, but it may still be advisable to let your doctor know of all medications you are currently taking before getting a prescription and proceeding to buy Zaditor eye drops online.

Side Effects

Zaditor side effects may occur, and some users may experience irritation, burning, or stinging in the eye, headache, stuffy or runny nose, bad taste in their mouth, or increased sensitivity to light. If side effects are experienced, you may want to stop use and meet with a doctor again to discuss eye allergy treatment medication alternatives.

Remember, these are not exhaustive lists, and it's important to consult with a healthcare professional for personalized advice and guidance. If you prefer, you may contact the U.S. Food and Drug Administration (FDA) directly. Visit or call 1-800-FDA-1088

Frequently Asked Questions about Zaditor (Ketotifen) Eye Drops

What is Zaditor (Ketotifen) used for?

Zaditor (Ketotifen) is used to treat and prevent itchy eyes caused by allergies (allergic/seasonal conjunctivitis).

How often do I use Zaditor Eye Drops?

Apply 1 drop to the affected eye(s) twice a day, every 8 to 12 hours.

How long does it take for Zaditor Eye Drops to work?

Zaditor Eye Drops start to work within minutes and provide relief for up to 12 hours.

Can I use Zaditor Eye Drops if I wear contact lenses?

Yes, you can use Zaditor Eye Drops if you wear contact lenses. However, you should wait at least 10 minutes after putting in the eye drops before putting your contact lenses back in.

What are the side effects of Zaditor Eye Drops?

Common side effects of Zaditor Eye Drops include burning, stinging, irritation, headache, stuffy/runny nose, bad taste in your mouth, and increased sensitivity to light.

Is Zaditor Eye Drops safe for children?

Zaditor Eye Drops is safe for children aged 3 years and older.

Is Zaditor Eye Drops safe for pregnant or breastfeeding women?

Zaditor Eye Drops should only be used during pregnancy or breastfeeding if clearly needed. Talk to your doctor about the risks and benefits.

Can I use Zaditor Eye Drops with other medications?

It is important to tell your doctor about all other medications you are taking, including prescription, over-the-counter, and herbal medications. Zaditor Eye Drops may interact with other medications.

How long can I use Zaditor Eye Drops?

You can use Zaditor Eye Drops for as long as you need to treat your allergy symptoms. However, if your symptoms do not improve after 72 hours, talk to your doctor.

How do I store Zaditor Eye Drops?

Store Zaditor Eye Drops at room temperature between 68°F and 77°F (20°C and 25°C).

What should I do if I miss a dose of Zaditor Eye Drops?

If you miss a dose of Zaditor Eye Drops, apply it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and go back to your regular schedule. Do not double up on doses.

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.