Ketotifen Eye Drops

Ketotifen eye drop is used for short-term symptomatic relief of allergic conjunctivitis (e.g. itchy or watery eyes). Ketotifen belongs to a group of medications called anti-histamines. It works by inhibiting the effect of chemical substances that causes the allergic symptoms.

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​What is this medication used for

Ketotifen eye drop is used for short-term symptomatic relief of allergic conjunctivitis (e.g. itchy or watery eyes). Ketotifen belongs to a group of medications called anti-histamines. It works by inhibiting the effect of chemical substances that causes the allergic symptoms.

 ​

Dosage and How to Use

Adults and Children 3 years old and above: Apply 1 drop into the affected eye(s) twice a day.

This eye drop contains a preservative, called benzalkonium chloride which may be deposited in soft contact lens, and cause eye irritation. Remove any contact lenses before applying the medicine. Wait for at least 15 minutes after application before reinserting the contact lenses. However, it is best to avoid wearing contact lenses if you have eye redness or itchiness.

Ensure proper administration technique:

  • Wash and dry hands before and after application.
  • To apply the eye drops, bend your head backwards and gently pull your lower eyelid down. (Fig.1)
  • Hold the dropper above one eye. Squeeze one drop into the pocket formed by gently pulling down of the lower eyelid. Ensure the dropper tip does not touch your eye or lashes.(Fig.2)
  •  After application, release the eyelid, keep the eye closed and press the tip of one finger against the inner corner of the eye for around 1-2 minutes. This will prevent the drop from running through the tear duct into your throat and most of the drop will remain in the eye. (Fig.3)
  • If necessary, repeat these steps with the other eye. Allow at least 5 minutes between applications if other eye drops are to be used. Do not share your eye drops with anyone else.
  • If you forget or miss a dose, apply it as soon as you remember. If it is nearly time for the next application, skip the missed application and continue with the next dose at the usual time. Do not double the number of drops.

 

Side Effects, Precautions, Contraindication

Before you use this medication

Do not use the eye drop if the solution is cloudy or the colour has changed.

This eye drop should be avoided if you have a known history of allergy to ketotifen or any of the other listed ingredients in the product.

Please seek your doctor's or pharmacist's advice before using this medication if you are pregnant or breastfeeding.

                                  

Interactions with other medications

Inform your doctor and/or pharmacists if you are taking, have recently taken or plan to take any prescription or non-prescription medicine, nutritional supplements or herbal products. Ketotifen may interact with the other medications you are taking.

 

Side effects

Common side effects: temporary burning or stinging sensation, eye discharge, eye pain, dry eye and itching may occur.

Inform your doctor or pharmacist if they persist or become bothersome. Avoid driving or operating machinery if you experience blurred vision or drowsiness.

 

Handling and Storage​

Keep out of reach and sight of children.
Store in a cool dry place.
After opening, the eye drop should not be used for more than 4 weeks. 
​Discard any remaining content.​

 

When to seek further medical advice

Stop using the eye drop and inform your doctor and/or pharmacist immediately if you experience any allergic symptoms (e.g. rashes, itchiness, difficulty with breathing, swelling around the face and throat), side effects (e.g. eye pain/discomfort, vision changes, redness of the eye) and if the eye condition worsens or does not improve after 3 days of use.

Just Ask! Your Pharmacist - Know Your Medicine, Get It Right! 

Information updated 31st October 2016
Prepared by the Pharmaceutical Society of Singapore (www.pss.org.sg)​

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Ketotifen Eye Drops

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