The two medicines can be taken together, and there is no contraindication between the two medicines. It can be used to treat chronic bronchitis, emphysema, cough and phlegm; Ambroxol is a kind of mucolytic agent, which can dissolve phlegm and promote phlegm discharge; there is no contraindication to the use of Ambroxol, and the two medicines can work together to dissolve phlegm. Adverse reactions: the adverse reactions of the tablets are not clear; while the application of Ambroxol occasionally see lack of appetite, rash, nausea, diarrhea, abdominal pain and other adverse reactions. Contraindications: People who are allergic to the ingredients contained in the drug, infants, newborns need to be carried out to reduce phlegm and asthma tablets; people who are allergic to Ambroxol, and women in the first trimester of pregnancy need to be prohibited Ambroxol. Precautions: The tablets contain promethazine hydrochloride, which should not exceed 37.5 mg per day when used alone; if you overdose on Ambroxol or experience serious adverse reactions, you should seek immediate medical attention. Both the tablets and Ambroxol are symptomatic drugs, and individuals should follow the doctor’s instructions and not abuse them, whether they use the drugs alone or in combination.