Dextromethorphan and Ambroxol are generally not to be taken together. Dextromethorphan is a centralized cough suppressant, which can be used to treat dry cough and cope with cough symptoms caused by bronchitis, upper respiratory tract infections and other diseases. Ambroxol is a mucolytic drug, which can effectively reduce the viscosity of phlegm, so that phlegm can be more easily coughed up, and can be used to treat various respiratory diseases caused by phlegm viscosity and coughing difficulties. Therefore, it is not recommended to take Dextromethorphan and Ambroxol together. ADVERSE REACTIONS: The use of dextromethorphan may cause adverse reactions such as headache, dizziness, drowsiness, loss of appetite, belching (hiccups). Ambroxol is well tolerated; gastrointestinal upset and allergic reactions may occur in a very small number of patients. Contraindications: Dextromethorphan is contraindicated in persons who are allergic to dextromethorphan, in lactating women, in women in the first trimester of pregnancy, in persons with a history of psychiatric disorders, and in persons who are taking a monoamine oxidase inhibitor medication or who have not been off the medication for two weeks. The drug is contraindicated in people who are allergic to Ambroxol. Cautions: Children must be supervised by an adult when using either medication. Individuals using either Dextromethorphan or Ambroxol should follow the doctor’s instructions for the scientific use of the drug and not abuse it. If you need to use the drug is recommended under the guidance of a professional doctor to regulate the use.