Loratadine Tablets are recommended to be used at night before going to bed, because Loratadine Tablets is an anti-allergic drug, which may cause central inhibitory adverse reactions during the administration of the drug, such as dizziness, fatigue, drowsiness and so on. In addition, during the use of loratadine tablets need to pay attention to, if you need to do skin allergy test, such as penicillin allergy test, tetanus antitoxin allergy test, need to stop the loratadine tablets for more than 48 hours before recommended to do the skin allergy test, otherwise it will be easy to reduce the incidence of positive allergy test. During the use of loratadine tablets, can not be used at the same time ketoconazole or macrolide antibiotics, such as roxithromycin, erythromycin and so on, because loratadine tablets and these drugs are prone to serious adverse reactions, be sure to use under the guidance of a doctor or read the instructions of the drug carefully.