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Generic: Ketotifen


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Generic Zaditor is used for the treatment and prevention of itchiness that is caused due to Allergic conjunctivitis. It belongs to the antihistamines group of medicines. Beside this, it is also used to treat eye itching, irritation or burning, watery eyes, puffy eyelids, teary eyes and swollen eyelids. The medicine is known to kill the bacteria that are responsible for causing allergy in the eyes. Furthermore, this medicine is also responsible for working on mast cell stabilizer and hence stops allergic signs. This is mainly done by dropping the release of natural elements that is known to cause allergy. The medicine shows its effects within few minutes of its usage. 

Generic Zaditor or Ketotifen belongs to the group of medicine known as antihistamine. This medicine is used to treat allergic reactions in eyes. In addition to this, the medicine is also known to provide relief from irritable bowel syndrome disease. Generic Zaditor contain ketotifen fumarate as active ingredient. Generic Zaditor is manufactured by various pharmaceutical companies located all over the world such as Novartis, Bausch and Lomb, etc. It is available in the market under various brand names such as Zaditen, Alaway, Zyrtec, Itchy-eye drops, Claritin Eye, etc. 

Mechanism of action: 

Generic Zaditor is known to kill bacteria that are responsible for causing allergic reaction in eyes. This is done by the reduction in the release of natural substance that causes allergy. 


Generic Zaditor is used to prevent and treat itching in eyes. 

Side effects: 

Some of the user of generic Zaditor might get side effects such as: 

  • Burning/irritation of eye
  • Headache
  • Stuffy/runny nose
  • Bad taste in mouth
  • Increased sensitivity to light
  • Dry eyes
  • Pain in eyes
  • Swelling in eyes
  • Severe dizziness
  • Trouble in breathing 


Drug interactions: 

Generic Zaditor might interact with some other drugs. Therefore, if the patient is using any other medicine, prescribed or non-prescribed drugs, herbal products, then they should tell to the doctor. 


The patient should use this medicine one drop twice in a day with an interval of 8-12 hours.  

How to use: 

  • Before applying this medicine, the patient should wash their hand. To avoid chances of contamination, they should not touch the tip of the dropper while using medicine.
  • The patient should tilt their head back, look forward. Lower eyelid is pulled down so as to make pouch. 
  • The dropper is held directly over the eye. One drop is applied in the lower eyelid. 
  • After that, the patient should look downward and close the eyes for 1 or 2 minutes.
  • One finger is placed at the corner of the eye and pressure is gently applied. 
  • Do not blink or rub eyes after using medicine. Also, the dropper should not be rinsed.
  • The cap is replaced after each use and the bottle is kept closed tightly.


Missed dose: 

In case the patient misses their dose, should use it as soon as it is remembered. However, if it is time for the next dose, the missed dose should be skipped and scheduled dose should be used. In any case, do not take double dose to make for the missed one. 


In case overdose is suspected, the patient should consult to their doctor as soon as possible. 


  • Before using generic Zaditor, the patient should tell to the doctor if they are allergic to this medicine or have any other allergy.
  • The inactive ingredients present in the medicine might also cause allergic reaction in some of the patient. Care should be taken for the same.
  • In case the patient has any medical history of eye problem such as glaucoma, then they should tell to the doctor proactively.
  • After using this medicine, the patient might get blurred vision temporarily. Therefore, work that requires alertness such as driving vehicle, operating machine, etc. should be avoided.
  • Generic Zaditor should not be given to child of age group less than 3 years.
  • During pregnancy, this medicine should be used only if doctor has recommended for it. The patient should discuss the risk and benefit of using this medicine during pregnancy

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