Zaditen 1mg
Ketotifen Fumarate
Zaditen 1mg
1 mg
Pack Size:
100 tablet(s)
*Maximum: 90-day supply  Maximum 90-day supply
Please note:

Due to policy restrictions and health regulations, can only dispense a maximum 90-day (3 month) supply of your medication based on a valid prescription. A valid prescription must be written and signed by a licensed physician and must have a prescription date that is no more than one year (365 days) old. All new prescriptions are verified with a signing physician.

If you place an order that exceeds a 90-day (3 month) supply of your medication, YouDrugstore will adjust your order to conform to policy restrictions. This adjustment will be confirmed with you before your order is processed.

Price per pack
$252.05 USD
$246.44 USD
USD$224.04 224.04USD
Zaditen tablets and elixir contain the active ingredient ketotifen hydrogen fumarate, which is a type of medicine called a sedating antihistamine.
Histamine is a substance produced by the body as part of its defence mechanisms. It is stored in cells called mast cells, in almost all tissues of the body. When the body reacts to a foreign substance (known as an allergen, eg house dust mites, pet fur), the mast cells stimulated by the allergen release their stores of histamine.
The released histamine then binds to its receptors (H1 receptors), causing a chain reaction that results in allergic symptoms. It causes an increase in blood flow to the area of the allergy, and the release of other chemicals that add to the allergic response.
All this results in the symptoms of an allergic reaction. For example, in hay fever, histamine causes inflammation of the nose, resulting in a runny nose, sneezing and nasal congestion.
Ketotifen is thought to work in a number of ways. It prevents the release of histamine from mast cells and also blocks H1 receptors, so that any histamine that is released is prevented from having an effect.
By blocking the actions of histamine, ketotifen helps prevent your body from reacting to allergens that would normally cause your allergic symptoms.
Ketotifen is called a sedating antihistamine because it enters the brain in significant quantities and causes drowsiness.

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Zaditen 1mg