The maximum duration of loratadine citrate tablets should be determined after taking into account the severity, physical condition and clinical symptoms of the patient. Loratadine Citrate Tablet is a commonly used antihistamine. Its main action is anti-allergic. It can be used to treat allergic rhinitis and acute urticaria and chronic urticaria. Generally, Loratadine citrate can be used for more than 1 week in patients with acute urticaria, for more than 1 month in patients with chronic urticaria, and for about 3 days in patients with acute allergic rhinitis. Administration of loratadine citrate tablets may cause adverse reactions such as dry mouth, drowsiness and fatigue. It is prohibited for people who are allergic to loratadine citrate, pregnant and lactating women to avoid drug risks. How long a patient needs to take loratadine citrate tablets depends on the patient’s condition and doctor’s advice.