Codeine phosphate compound oral solution commonly known as “cough water”, the product contains codeine (also known as methylmorphine), ephedrine (also known as ephedrine), camphor tincture ingredients are psychotropic drugs (drugs), a large number of doses can stimulate the brain to produce a sense of euphoria, long-term use, can lead to drug dependence, addiction, will cause the drinker psychological behavior It can cause abnormal behavior, personality alienation, and dysfunction of multiple organs and systems in the body. Therefore, patients must be extra careful in the process of using some cough medicines that have addictive effects. What are the causes of addiction to “cough water”: Ephedrine, which should also be used with caution Ephedrine is an alkaloid in the Chinese medicine ephedra, which has a history of 4,000 years of medicinal use of Chinese medicine, it has the effect of relaxing bronchial smooth muscle, which helps prevent bronchial asthma and relieve mild asthma attacks. Ephedrine has a central excitatory effect, do not use large doses and long-term, otherwise it can cause headaches, insomnia, palpitations, anxiety, bradycardia, etc.. It is contraindicated in patients with hyperthyroidism and prostatic hyperplasia and in nursing mothers. Ephedrine mono tablets, injections and syrups are psychotropic drugs and should be used with caution. Phlegm-heat cough: Patients with phlegm-heat in the lung due to the violation of the airways and the loss of lung circulation and purification, and may also have superficial symptoms if the superficial evil is not resolved. The clinical manifestations are cough, thick yellow sputum, unpleasant coughing and vomiting, stuffy nose and runny nose, sore throat and mute voice, red tongue, thin yellow or greasy coating, and slippery pulse. Some cough medicine prescriptions contain the narcotic drug codeine, and ephedrine, which can produce psychostimulant effects, and long-term use, especially if you do not follow the rules to increase the amount of medication, it is possible to produce dependence and addiction.