Loratadine tablets are an anti-allergy drug, and should be discontinued after allergies are controlled. long-term use will cause certain harm to various body systems, such as the respiratory system, digestive system, cardiovascular system, nervous system, etc. 1. respiratory system: long-term oral loratadine tablets will cause cough, dyspnea, hemoptysis and other respiratory symptoms, it is recommended to visit the respiratory medicine department in a timely manner after stopping the drug; 2. Digestive system: Long-term oral loratadine tablets can affect the gastrointestinal tract and cause indigestion, vomiting, stomach pain and other symptoms, which can be treated by taking omeprazole and other gastric drugs after stopping loratadine tablets; 3. Cardiovascular system: Long-term oral loratadine tablets can also affect the cardiovascular system and cause palpitations, unstable blood pressure and other symptoms, such as hypertension or hypotension, supraventricular 4, the nervous system: long-term oral loratadine tablets will lead to peripheral and central nerve damage, dizziness, abnormal sensation, insomnia, forgetfulness, anxiety, depression and other symptoms, it is recommended to go to the hospital neurology department for a comprehensive examination after stopping the drug, according to the results of the examination; 5, other: loratadine tablets need to be metabolized through the liver and kidneys, long-term Therefore, long-term use is not recommended for women with abnormal liver and kidney function and during pregnancy. In addition, long-term use of loratadine tablets may also be resistant to the drug, resulting in reduced efficacy, but also weight gain, sore throat, decreased libido, hair loss and other toxic side effects, so long-term use is not recommended. Before taking loratadine tablets, follow your doctor’s advice and read the drug’s instructions in detail.