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Buy Zyrtec
If you are buying Zyrtec for the first time, start with a small amount to make sure that Zyrtec works for you and then order more later.
If you have been taking Zyrtec for a while and will continue to take it regularly, buy as much Zyrtec as you can at once.
Our online pharmacy offer discounted prices when you buy Zyrtec in large quantities.
Plus, you won't have to worry about refills for a while.
Zyrtec
Zyrtec tablets contain the active ingredient cetirizine, which is a type of medicine called a non-sedating antihistamine.
Cetirizine works by preventing the actions of histamine.
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, 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.
In hayfever, histamine causes inflammation of the nose, eyes, skin or airways and results in itchy watery eyes, a runny nose,
sneezing and nasal congestion.
Zyrtec works by blocking histamine H1 receptors.
It does not prevent the actual release of histamine from mast cells, but prevents it binding to its receptors.
This in turn prevents the release of other allergy chemicals and increased blood supply to the area,
and provides relief from the typical symptoms of hayfever.
Zyrtec can also be used to relieve the symptoms of a condition called chronic idiopathic urticaria.
This is a chronic itchy rash, similar to nettle rash, but with no apparant cause.
Blocking the actions of histamine relieves the itching and reduces the rash associated with this condition.
Cetirizine is called a non-sedating antihistamine as it does not enter the brain, and is therefore unlikely to cause drowsiness.
However, some people may experience some slight sleepiness.
Dosage
Adults and Children 12 Years and Older:
The recommended initial dose - 5 or 10 mg once a day, depending on gravity of your attributes.
If you have a kidney or a condition of a liver, the doctor will probably order 5 mg daily.
Children 6 to 11 Years:
Usual starting dose - 5 or 10 mg (1 or 2 teaspoonfuls a syrup) once a day.
If your child has a kidney or a condition of a liver, the doctor will probably order lower dose.
Children 2 to 5 Years:
The recommended initial dose - 2.5 mg (half teaspoonful) once a day.
The dosage can be increased to a maximum of 5 mg (1 teaspoonful) once daily or 2.5 mg (half teaspoonful) each 12 hours.
If the child has a kidney, or a condition of a liver, Zyrtec it is impossible to give.
Children 6 months to <2 years:
Usual starting dose - 2.5 mg (half teaspoonful) once a day.
In children 12 - 23 months, a dose can be increased to a maximum of 5 mg in the day given as 2.5 mg (half teaspoonful) each 12 hours.
Zyrtec should not be used, if your child has problems of a liver or a kidney.
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