Usually, people suffering from allergies always have an effective antihistamine in the medicine cabinet, for example, Cetirizine. As a rule, the disease worsens in accordance with the season, so there is no need to be treated constantly, because of this, often the instructions for use are lost. It is important to remember how to take Cetirizine, because its misuse and excess of the prescribed dosages can trigger the occurrence of adverse side effects.
How many days and how much should I take Cetirizine?
Under normal general health, the drug is given in a standard dosage - 1 tablet, which is 10 mg cetirizine hydrochloride, once every 24 hours, preferably in the evening.
The reception of drinks or food does not affect the intestinal absorption and mechanism of action of cetirizine, so the time of the meal does not matter.
Correction of these standard dosages of medication is carried out only for patients with impaired renal function. The amount of the active ingredient remains the same (1 tablet), only the frequency of its intake is determined in accordance with the measured values of creatinine clearance:
- from 50 ml / min - once a day;
- more than 30, but less than 49 ml / min - after 24 hours;
- 10-29 ml / min - every 3 days.
When clearance less than 10 ml / min drink Cetirizine is prohibited.
How long can I take Cetirizine?
To stop the clinical manifestations of allergies, short courses of therapy are sufficient - up to 7 days.
In the case of hay fever (hay fever), you can increase the duration of treatment. As shown by medical research, the described drug is safe even with prolonged therapy from 3 to 6 weeks.
It is worth noting that to establish the exact time frame for how long to take Cetirizine, only an allergist can after a blood test, as well as a smear of mucous secretions from the nasopharynx. In some situations, the course of treatment lasts up to six months.