There is no fastest way to cure cough, according to the respiratory system, circulatory system, digestive system diseases that cause cough, respectively, cough and phlegm (dextromethorphan), strong heart (Glycoside C), acid suppression (omeprazole) and other treatments. 1. Respiratory system, the most common diseases that can cause cough include lung infection, chronic bronchitis, chronic obstructive pulmonary disease, etc. Generally, symptomatic cough and phlegm treatment is taken with dextromethorphan, aminoglutethimide and other drugs. 2. Circulatory system, mainly refers to heart failure, can cause pulmonary stasis and cough. Generally, cardiotonic treatment is used to strengthen the heart, thus relieving cough symptoms. 3. Digestive system, mainly refers to gastroesophageal reflux disease (GERD), due to gastric fluid irritation of the esophagus leading to cough symptoms, can be used for acid suppression treatment such as omeprazole. There are many reasons for coughing. Specific causes need to be clarified after medical examination, and at the same time, the use of drugs in accordance with the doctor’s instructions, not self-medication.