The side effects and hazards of Dexloretadine mainly include drowsiness, drowsiness, fatigue, dry mouth, nausea, dizziness and so on. Loratadine citrate will be converted to diclofenac tartrate after entering the human body, and through selective antagonism of H1 receptors and inhibition of histamine release, to play a role in alleviating the effects of allergic disease symptoms, patients taking the drug side effects and hazards that often occur mainly include drowsiness, drowsiness, tiredness, fatigue, dry mouth, headache, nausea, dizziness, limb edema, amnesia, and so on. Loratadine citrate should not be taken before patients need to undergo skin sensitization experiments to avoid affecting the results of the experiments, the existence of hepatic dysfunction, urethral hypertonia, glaucoma and other contraindications of patients should follow the doctor’s instructions to be cautious with the use of medication, patients should not be operating, driving and other activities after taking the drug. Drugs should be used under the guidance of a physician, it is recommended that patients who need to take beriberi loratadine to the relevant departments of the regular hospital for consultation, do not take the drug on their own.