Zaditen (Ketotifen)

Also Known as Zaditen

Prescription medicineOnly Available By Prescription

Top brand choice

Strength Pack Size Qty
Pack Size

You'll have option to make 4 interest-free payments by credit card once your order is confirmed using

Top Generic choice

Strength Pack Size Qty
Pack Size

You'll have option to make 4 interest-free payments by credit card once your order is confirmed using

What if I find a lower price with another pharmacy?

We guarantee the lowest price on all of our prescription products. If you find your medications cheaper at any other recognized licensed mail order pharmacy, we will not only match their price, we will beat it by 25% of the difference. It is our 125% price match guarantee!

Example: If you find a product on Canada Drugs Direct for $50.00 and find the same product for $40.00 at another mail order pharmacy, we will provide you with a $12.50 discount, bringing your total to $37.50.

To get the discount please make sure to mention the price match to the customer service team when they call to collect payment for your order. Or call toll free at 1-888-904-8467 to place the order through the phone.

Terms & Conditions of Program

  • Guaranteed lowest price is only valid at the time of sale.
  • We will only match the current advertised price.
  • Products must be identical and in stock at the time of placing an order with a licensed mail order pharmacy. They must be an online Canadian pharmacy with an address in Canada.
  • Products must be authentic in brand and size (same manufacturer, same country of manufacture, same pack size, same strength and same quantity).
  • Products must be new. We cannot match the price of any used, short expiry or expired product.
  • Price match can only be issued over the phone with our customer service team. Please note at this time we cannot offer price matching for the products Ozempic or Saxenda.
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.


Zaditen (ketotifen) tablets is a medication used as an add-on treatment for mild atopic asthma. Ketotifen tablets are prescribed as treatment outside of the United States and there is no FDA approval for this usage.

Ketotifen is an antihistamine and mast cell stabilizer. During allergic and asthmatic responses, the body releases molecular signals that mediate the inflammatory response. Ketotifen prevents the release and function of these signals, dampening an inflammatory response. When taken on a regular basis, ketotifen tablets help to ease the frequency, severity, and duration of asthma attacks. Ketotifen does not treat an acute asthma attack.


Adults and children 3 years or older should take ketotifen 1 mg twice daily.

Ketotifen should only be used in combination with other treatments for asthma, and not on its own.


The active ingredient in Zaditen is ketotifen fumarate.


When combined with oral medications used to treat diabetes, ketotifen tablets have been reported to cause thrombocytopenia.

When starting treating, dizziness, fatigue, and dry mouth are common. These effects usually go away on their own within the first few weeks.

Ketotifen has been known to cause an increase in liver enzymes, and levels should be monitored by a doctor when starting treatment.

Side Effects

The adverse effects of ketotifen may include:

  • Abdominal pain
  • Epistaxis
  • Increased appetite
  • Influenza
  • Ocular edema
  • Rash
  • Respiratory infections
  • Weight gain


  1. "PRODUCT MONOGRAPH Zaditen ® (Ketotifen Fumarate)." Teva Canada Limited. Novopharm Court.; 2010. Accessed December 6, 2019.

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.

product-reviews Product Reviews