The medicine "Telfast" is a blocker of histamine H1 receptors. The active substance is fexofenadine. The component has a specific activity, does not have anticholinergic, antiadrenergic and sedative effects.
Antihistamine activity is noted in the first hour after administration. The drug reaches its maximum effectiveness after six hours. The effect of the drug lasts a day. Studies have shown that after 28 days of therapy, addiction in patients does not develop. As clinical practice shows, for adults, a dosage of one hundred and twenty milligrams (Telfast 120) is sufficient to maintain therapeutic efficacy throughout the day.
The tool is recommended to eliminate the manifestations caused by allergic rhinitis (seasonal) and idiopathic urticaria (chronic) in adults and children.
For patients from six to eleven years of age, a medicine is prescribed in the form of tablets containing thirty milligrams of the active substance. The drug is recommended to be taken twice daily per tablet. For children with impaired renal function, a medicine is prescribed once a day.
For adults and children over twelve years of age, the dosage is set in accordance with the indications. The doctor may prescribe tablets containing one hundred and eighty (the drug "Telfast 180") or one hundred and twenty milligrams of the active ingredient once a day.
When taking the medication, dizziness, headaches, fatigue, nausea, and drowsiness may occur.
The Telfast medication does not allow children under six years of age (for tablets of thirty milligrams), patients under twelve years of age (for tablets of one hundred twenty and one hundred eighty milligrams).
Due to the fact that there is no data on the use during lactation and gestation, the drug is not recommended for lactating and pregnant women.
With caution, a drug is prescribed for renal failure (chronic).
When taking antacids containing magnesium or aluminum hydroxide, and the drug "Telfast", the instructions for use recommend that you observe an interval of two hours between doses.
Due to the lack of data on the use of the drug in elderly patients, they are prescribed the medication with caution. The condition of patients should be monitored by a doctor.
Given the pharmacodynamic profile and known side effects, experts believe that the effect of the drug on the ability to drive vehicles or perform work associated with an increased concentration of attention is unlikely. As a result of clinical studies, the effect of the drug on the central nervous system has not been established. At the same time, in order to identify patients' sensitivity to the action of the Telfast preparation, the instructions for use recommend checking the individual reaction before the patient begins to perform work that requires a high speed of psychomotor reactions and concentration of attention.
In case of an overdose, nausea, dizziness, dry mouth, and drowsiness are likely. As a treatment, standard measures are recommended to eliminate an unabsorbed drug from the digestive tract. If necessary, supportive and symptomatic therapy is carried out.
With the combined use of the Telfast medication and Ketoconazole or Erythromycin, the concentration of the former rises in plasma by two to three times.
The medicine should be stored at a temperature not exceeding 25 degrees. The shelf life of the drug is three years. Means "Telfast" instructions for use does not recommend taking after the specified time.
Despite the fact that the medication is available in pharmacies without a prescription, you need to visit a doctor before using it.