The cough syrup consists of the following components:

1. dextromethorphan hydrobromide: non-narcotic antitussive ji, which acts on the cough center of the medulla oblongata, can effectively inhibit severe cough and reduce the number of coughs.

2. Ephedrine hydrochloride: bronchiectasis ji.

3. Codeine phosphate: directly inhibit cough, relieve the discomfort of patients, and it will be addictive after long-term use.

4. Clophenamine: antihistamine ji.

5. Anhydrous caffeine: Caffeine, to relieve the sore throat of cough.

6. Gufen Na Xin: Dilute bronchial secretions, reduce the viscosity of phlegm, promote villi movement, and effectively eliminate phlegm, relieve chest tightness, chest tightness and dyspnea.

Cough syrup mainly acts on the cough center, reducing its sensitivity, and then inhibiting cough, so it has the effect of relieving cough. Cough syrup containing codeine or Dextromethorphan is only suitable for relieving dry cough, and it is best not to use it for patients with excessive phlegm, because it will hinder the discharge of sputum and then block the respiratory tract. In addition, the elderly, children and pregnant women should not take yao products with central antitussive effect.

Be especially careful when using cough syrup containing codeine, and stop taking the medicine when the symptoms disappear; Because codeine is a semi-synthetic opium ji, it has excellent antitussive effect. This syrup can relieve cough as long as you take 10cc, but improper dosage or long-term use will not only cause serious side effects, but even addiction. Because cough syrup tastes sweet, it doesn't taste like medicine. If you take it unconsciously for a long time, it will be addictive. It has been reported in the media that some people treat cold syrup containing codeine as a drink, and they drink it regardless of illness, and finally they become addicted.