Taking loratadine does not usually cause frequent urination, which is mainly associated with urinary tract disorders. However, some patients taking loratadine urinary frequency may belong to the adverse reaction of the drug. Patients with frequent urination is mainly due to prostatitis, urinary tract infections and other stimuli caused by loratadine has little to do with loratadine. Taking loratadine may cause fatigue headache, in addition to the urinary system may appear urinary frequency, urine appearance changes, etc., the incidence of adverse reactions is generally less than 2%, it is recommended that patients, such as urinary frequency can be examined urine routine to clarify the cause of the disease. Patients who are allergic to loratadine should not use it. Loratadine is suitable for the relief of allergic symptoms caused by allergic rhinitis, such as nasal congestion, runny nose, etc., in addition to relieving chronic urticaria and other allergic diseases. Loratadine is an antihistamine drug, the mechanism of action is mainly for the antagonism of peripheral H1 receptors, to relieve the role of allergy symptoms. The possibility of taking loratadine causing frequent urination is low, and it is recommended that patients seek medical attention as soon as possible to find the cause of frequent urination, so as not to delay the condition.