Paracetamol, chlorpheniramine maleate, only has a relieving effect on allergy-induced coughs, but it can’t be said to be “miraculous”, and generally has no clear efficacy on coughs caused by other etiologies. Chlorpheniramine maleate belongs to the histamine H1 receptor antagonist, can reduce the allergic reaction of capillary permeability, relieve smooth muscle contraction caused by coughing, chest tightness, wheezing and other symptoms, for the allergic reaction caused by coughing, such as allergic asthma, allergic bronchitis, has a better therapeutic effect. When taking the drug treatment, it is easy to appear drowsiness, fatigue and other symptoms, a few patients will also have gastrointestinal discomfort symptoms. Avoid drinking alcohol and contacting allergens during the use of the drug. It is forbidden to drive a car, engage in high-altitude work and operate precision instruments and equipment. If you have a cough, it is recommended to consult a doctor in a timely manner to clarify the cause of the disease after targeted medication, not blindly self-medication, in order to prevent the use of medication is not symptomatic, delay or even aggravate the condition.