Zyrtec refers to drugs that are blockers of H1-histamine receptors.
The drug is a competitive antagonist metabolite of hydroxyzine, histamine. He successfully blocks histamine H1-receptors. Zyrtec, reviews of physicians confirm this fact makes it easier for, and sometimes even prevent the development of allergic reactions. It is noted that the drug has on the body protivoekssudativnoe and antipruritic effect. Zyrtec has an impact on allergic reactions, which are at an early stage of development. Preparation restricts the release of mediators that are at the last stage of allergic reactions, reduces migration of basophils, eosinophils and neutrophils.
Zyrtec prevents the development of edema, significantly reduces the permeability of capillaries and relieves spasms of smooth muscle. With the drug can eliminate skin reaction occurring upon administration of histamine and specific allergens. In bronchial asthma, having a mild course, the drug reduces bronchoconstriction. According to the instructions for Zyrtec, it has virtually no antiserotoninovym and anticholinergic effect.
It is produced in such dosage forms:
- film-coated tablets;
- Zyrtec drops for oral administration.
Application Zirteka useful when:
- year-round or seasonal allergic conjunctivitis and rhinitis;
- urticaria, including chronic idiopathic;
- allergic dermatitis;
- antinevroticheskom edema;
- skin itch.
According to the instructions, Zyrtec has the contraindications:
- hypersensitivity to any component of the drug;
With care prescribe a medicine for the elderly, children under 1 year.
Instructions Zirteka: methods of use
According to the instructions for Zyrtec tablets are recommended for children older than 6 years and adults. Take a dose of 10 mg once a day or twice a day, 5 mg, with a glass of water.
Before taking Zyrtec drops to dissolve in water, drink before meals:
- 5 drops / day - children 6-12 months;
- 5 drops / 1-2 times a day - to children 1-2 years old;
- 5 drops / 2 p. day - children 2-6 years;
- 10-20 drops / day - adults and children after 6 years.
Prolonged or inconsistent with the doctor use Zirteka, patient testimonials confirm, can have its negative effects, manifested in sleepiness, dry mouth, various allergic reactions, dizziness, headaches, discomfort in the gastrointestinal tract, etc.
Conditions and terms
Zyrtec should be stored in its original packaging at a temperature not exceeding 30
C. Shelf life is 5 years.