Paracetamol, also known as chlorpheniramine maleate, is not recommended for long-term use. Chlorpheniramine maleate is not recommended for long-term consumption. Long-term use may bring about adverse reactions such as dizziness, drowsiness, dry mouth, weakness, and may also induce epilepsy. The drug should be stopped promptly after the symptoms are relieved and the disease is cured to avoid adverse reactions. Application should be noted that epileptic patients, machine operators, drivers are prohibited. Use with caution in lactating women, neonates, premature infants, glaucoma, hypertension, hyperthyroidism, prostatic hyperplasia, pyloroduodenal obstruction. Chlorpheniramine maleate, as a first-generation antihistamine drug, is gradually replaced by second-generation antihistamine drugs, which can still be used for the treatment of allergic diseases in clinical practice. Patients with the above diseases can apply the drug under the guidance of a doctor.