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Ketotifen

Written By Dr. Subita Alagh

Reviewed By Dr. Rajeev Sharma

Last updated 25 Nov 2025 | 09:34 AM (UTC)

Ketotifen Uses

Ketotifen is used to prevent allergic eye disease and asthma.

How Ketotifen 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 of Ketotifen

Irritation, Agitation, Insomnia (difficulty in sleeping), Nervousness, Sedation, Conjunctival inflammation

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Medicine brands for Ketotifen

Sun Pharmaceutical Industries Ltd

Torrent Pharmaceuticals Ltd

Allergan India Pvt Ltd

Ikon Remedies Pvt Ltd

Appasamy Ocular Device Pvt Ltd

General Pharmaceuticals Pvt Ltd

Grievers Remedies

Frequently asked questions for Ketotifen

Q. 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

Q. Is Ketotifen legal?

Ketotifen is legal and available worldwide in many countries

Q. Is Ketotifen a steroid?

Ketotifen is not a steroid

Q. Is ketotifen an antihistamine?

It is an antihistaminic drug

Q. Is Ketotifen addictive?

Ketotifen is not addictive

Q. Is Ketotifen safe?

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

Q. Does Ketotifen cause weight gain, make you sleepy, or drowsy?

Ketotifen can cause weight gain, can make you sleepy and drowsy

Q. 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

Q. How long does Ketotifen last?

Generally Ketotifen eye drop takes 15 min to work and lasts up to 5-8 hours.