Paracetamol generally refers to chlorpheniramine maleate, which works and acts as an anti-allergy and is used to treat skin allergies such as hives, eczema, neurodermatitis and other conditions. Chlorpheniramine maleate is an antihistamine drug that can treat capillary dilatation caused by allergic reactions, and play a role in reducing capillary permeability and relieving wheezing caused by bronchial smooth muscle contraction. It also has a pronounced central inhibitory effect, and can enhance the effects of anesthetics, analgesics, and hypnotics. Chlorpheniramine maleate can be used to treat dermatologic disorders such as urticaria, eczema, pruritus, insect bite dermatitis, neurodermatitis, solar dermatitis, etc. It can also be used for allergic rhinitis, drug as well as food allergies. Patients may experience adverse reactions such as drowsiness, thirst, polyuria, sore throat, drowsiness, feeling of weakness, palpitations (rapid heartbeat, often accompanied by panic), skin petechiae, bleeding tendency, etc., and allergy sufferers need to be prohibited from taking the drug. Patients need to consult a doctor in case of discomfort during the use of chlorpheniramine maleate.