Loratadine for allergic rhinitis usually works in about 30 minutes. However, the effectiveness of the drug can be determined by the severity of the patient’s condition, the patient’s own situation and other factors. If you need to use this drug, it is recommended to use it under the guidance of a doctor, do not use it without authorization. Loratadine Tablet can be used to relieve symptoms related to allergic rhinitis, such as sneezing, runny nose, itchy nose, nasal congestion, and itching and burning sensation in the eyes. After taking loratadine tablets, the symptoms are usually relieved quickly in about 30 minutes. However, the effect of use can be decided according to the severity of the patient’s condition and the patient’s own situation. Loratadine tablets should not be used for a long period of time, and should not be used more than 10 milligrams per day. After the use of loratadine tablets, there may be weakness, headache, drowsiness, dry mouth, gastrointestinal discomfort and other adverse reactions. It should be used with caution in patients with severe renal insufficiency and women who are pregnant or breastfeeding. If you need to use this drug, please use it under the supervision of a doctor.