Fexofenadine Hydrochloride Tablets are taken orally, and the recommended dose for adults and children over 12 years of age is 60mg twice a day, or once a day if combined with renal insufficiency, and the recommended dose for children between 6 and 11 years of age is 30mg twice a day, or once a day if combined with renal insufficiency. The drug is indicated for the relief of symptoms associated with seasonal allergic rhinitis in adults, children 6 years of age and older. It also treats the skin symptoms of chronic idiopathic urticaria in adults, children 6 years of age and older. The use of the drug may cause adverse reactions such as viral infections, nausea, menstrual cramps, drowsiness, indigestion, fatigue, etc. It is contraindicated for those who are allergic to the components of the drug. When using the drug, it should be noted that the drug should not be taken at the same time with aluminum and magnesium acid-forming agents for a short period of time. The drug needs to be used under the guidance of a doctor, do not use it without authorization.