Adults with colds and runny noses do not need medication under normal circumstances, but if symptoms worsen, it is recommended to take anti-cold medication such as Lianhua Qingdian. Adults with colds and runny noses are self-limiting illnesses, i.e., they can be cured by themselves without treatment; when the symptoms of colds, such as nasal congestion, runny nose, cough and phlegm are more serious, symptomatic treatment is the mainstay. For example, antihistamines (e.g. chlorpheniramine maleate) and nasal mucous membrane constrictors (e.g. pseudoephedrine hydrochloride) can be used for the runny nose, and medicines to alleviate the symptoms of cold and flu, such as cold and flu granules, Lianhua Qingdian, etc., and at the same time need to give up smoking, limit the use of alcohol, avoid eating stimulating foods, and develop a good habit of life. If the flu is caused by influenza virus, oseltamivir should be used as antiviral treatment. The use of drugs should strictly follow the doctor’s instructions, specific advice to consult a professional physician.