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Ketotifen is used to prevent conjunctivitis and asthma

How it works

The Ketotifen works by blocking the release of certain chemical messengers that may cause inflammation, spasm of muscles of the airways and other symptoms of asthma and allergies.

Common side effects

Increased sensitivity to light, Acne-like rash, Allergic reaction, Itching, Blurred vision, Headache, Tingling sensation in eye, Burning sensation in eye, Dry eye, Eye discharge, Eye pain, Eyelid disorder, Increased production of tears, Influenza like symptoms, Running nose, Sore throat

Available Medicine

  • ₹62
    Sun Pharmaceutical Industries Ltd
    1 variant(s)
  • ₹39 to ₹69
    Torrent Pharmaceuticals Ltd
    2 variant(s)
  • ₹24 to ₹52
    FDC Ltd
    2 variant(s)
  • ₹16
    Lark Laboratories Ltd
    1 variant(s)
  • ₹14
    Intas Pharmaceuticals Ltd
    1 variant(s)
  • ₹16
    Kopran Ltd
    1 variant(s)
  • ₹18 to ₹46
    Wockhardt Ltd
    2 variant(s)
  • ₹27
    East West Pharma
    1 variant(s)

Expert advice

  • Remove soft lenses from your eyes before instilling ketotifen eye drop and wait at least 15 minutes before reinserting lenses.
  • Keep a gap of at least 5 min before applying some other medicinal product.
  • Do not drive or operate heavy machineries as Ketotifen may cause blurred vision or drowsiness.
  • Avoid drinking alcohol while on ketotifen treatment as it may worsen the side effects.
  • Tell your doctor if you are taking medicines for depression or allergy.
  • Tell your doctor if you are or planning to become pregnant or are breastfeeding.

Frequently asked questions



Is ketotifen available over the counter?
Ketotifen eye drops are available over the counter. Ketotifen tablets and syrups are available only with doctor's prescription


Is ketotifen legal?
Ketotifen is legal and available worldwide in many countries


Is ketotifen a steroid?
Ketotifen is not a steroid

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Is ketotifen an antihistamine?
It is an antihistaminic drug


Is ketotifen addictive?
Ketotifen is not addictive


Is ketotifen safe?
Ketotifen is safe if taken as prescribed. In case of any side effects, consult your doctor


Does ketotifen cause weight gain, make you sleepy, or drowsy?
Ketotifen can cause weight gain, can make you sleepy and drowsy


How long does ketotifen take to work?
Ketotifen oral (tablet or syrup) takes about 2-4 hours to work and lasts up to 22 hours


How long does ketotifen last?
Generally ketotifen eye drop takes 15 min to work and lasts up to 5-8 hours.

Content on this page was last updated on 17 March, 2017, by Dr. Varun Gupta (MD Pharmacology)