The most effective way to relieve a dry cough without phlegm is to identify the cause of the dry cough and treat the cause. Cough suppressant drugs can relieve symptoms, but can not play a fundamental role.

Dry cough without sputum is common in infectious respiratory diseases, such as upper respiratory tract infection, bronchitis, pneumonia, tuberculosis, etc.. In addition, non-infectious diseases can also cause cough, such as bronchial foreign body, lung cancer. Cough variant asthma, gastroesophageal reflux disease may also be the cause of chronic dry cough. For infectious respiratory diseases, anti-infective treatment can be used, such as the use of cephalosporins or penicillin antibiotics for anti-infective treatment; if the cough is more frequent and severe, work, study and life have an impact, you can use cough suppressants, such as dextromethorphan, codeine and other drugs to stop coughing treatment. If it is a foreign body in the bronchial tube, you need to go to the hospital immediately to remove the foreign body. Cough variant asthma and gastroesophageal reflux disease should be treated regularly accordingly.

All in all, the most effective way is to treat the cause of the disease. You should actively improve your living habits, eat a light diet, prohibit spicy foods, and have a regular routine.