Ketotifen belongs to a group of medications called antihistamines. Ketotifen eye drops are used to treat the signs and symptoms of a condition called allergic conjunctivitis (an allergic reaction affecting the eyes).
Available form
Eye Drops, Solution
Dosage
Manufacturer
Jamp Pharma Corporation, Laboratoires Thea, Novartis Pharmaceuticals
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The usual recommended dose for adults and children over 3 years old is one drop in the affected eye(s) every 8 to 12 hours.
The single dose containers (preservative free), do not contain any preservatives and must be discarded after use. Once the single dose containers are open, they are no longer sterile so do not open the container until you are ready to use the eye drops. Blocks of 5 single-dose containers are packaged together in a blister. Any unused single-dose containers of an open blister should be discarded after 4 weeks. They can be discarded after 3 months if they have been stored in the outer carton.
If you are using the multi-dose containers (with preservative), do not use the eye drop while wearing soft contact lenses since they contain the preservative benzalkonium chloride. If you wear soft contact lenses, remove them before instilling the drops, and wait at least 10 minutes before putting your lenses back in.
Before using the eye drops, wash your hands thoroughly. Follow your doctor or pharmacist's instructions on how to use the eye drops. Do not allow the eye dropper to touch any surface. This could contaminate the dropper and lead to an eye infection. Keep the bottle tightly closed when you are not using it.
Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are using the medication without consulting your doctor.
It is important to use Zaditor (Ketotifen-opht) exactly as prescribed by your doctor. If you miss a dose, instill it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not instill a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Store Zaditor (Ketotifen-opht) at room temperature and keep it out of the reach of children.
Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.
Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.
The side effects listed below are not experienced by everyone who uses Zaditor (Ketotifen-opht). If you are concerned about side effects, discuss the risks and benefits of Zaditor (Ketotifen-opht) with your doctor.
The following side effects have been reported by at least 1% of people using Zaditor (Ketotifen-opht). Many of these side effects can be managed, and some may go away on their own over time.
Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.
Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.
Check with your doctor as soon as possible if any of the following side effects occur:
Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking Zaditor (Ketotifen-opht).
Multi-Dose Containers (With Preservative)
Each mL of ophthalmic solution contains 0.345 mg ketotifen fumarate equivalent to 0.25 mg ketotifen. Nonmedicinal ingredients: benzalkonium chloride 0.01%, glycerol, hydrochloric acid/sodium hydroxide, and purified water.
Do not use Zaditor (Ketotifen-opht) if you are:
There may be an interaction between ketotifen eye drops and any of the following:
If you are using other eye medications, your doctor or pharmacist may advise you to wait at least 5 minutes between the medications.
If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:
An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.
Medications other than those listed above may interact with Zaditor (Ketotifen-opht). Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the Nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.
Before you begin using a medication, be sure to inform your doctor of any medical conditions or Allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use Zaditor (Ketotifen-opht).
Contact lenses: If you wear soft contact lenses, remove them before instilling the drops, and wait at least 10 minutes before putting your lenses back in. If your eyes become red, take out your lenses and consult your eye doctor.
Pregnancy: Zaditor (Ketotifen-opht) should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking Zaditor (Ketotifen-opht), contact your doctor immediately.
Breast-feeding: It is not known if ketotifen passes into breast milk. If you are a breast-feeding mother and are taking Zaditor (Ketotifen-opht), it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.
Children: The safety and effectiveness of using Zaditor (Ketotifen-opht) have not been established for children under 3 years of age.
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