Cold and dry cough there is no fast cough medication, you can use dextromethorphan and other cough suppressants, relief is not obvious then need to consult a doctor, the specific effect varies from person to person. Dry cough after a cold, the main cough suppressant treatment, the use of dextromethorphan and other drugs, targeted control of cough symptoms. Symptomatic treatment is usually the mainstay of treatment, and less effective cough suppressants may need to be combined with antiviral therapy, such as ribavirin. In addition, if the relief is not obvious, we can not rule out other diseases, such as tuberculosis, lung infection, lung cancer, etc., can cause dry cough symptoms. It is recommended to consult a doctor in time and complete relevant examinations under the doctor’s guidance, such as lung X-ray, tuberculin test, tumor markers, blood routine, etc., and use medication according to the doctor’s instructions at the same time.