Paracetamol, also known as chlorpheniramine maleate, is a kind of antihistamine, that is, anti-allergy drug, is the first generation of antihistamine drugs, which is mainly used for the treatment of allergic rhinitis, as well as skin-type allergic diseases, for example, like hives, rashes, dermatitis and other diseases. This drug is recommended to be taken at night before bedtime because of its strong central inhibitory effect, which manifests itself as drowsiness, dizziness, weakness and other symptoms after taking the drug. In addition, do not drink alcohol while taking paracetamol, and do not take other anti-allergic drugs, such as restorative medicine, cyproheptadine, levocetirizine, etc., because these drugs are likely to increase the central inhibitory effect. Do not drive vehicles, work at heights, or engage in delicate work while taking paracetamol.