The cough syrup consists of the following components:

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

2. Ephedrine hydrochloride: bronchodilator.

3. Codeine phosphate: directly inhibit cough, relieve the discomfort of patients, and it will be addictive if used for a long time.

4. Clofenamin: an antihistamine.

5. Anhydrous Caffeine: Caffeine can relieve the sore throat caused by cough.

6. Gufennaxin: Dilute bronchial secretions, reduce the viscosity of sputum, 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 after the symptoms disappear; Because codeine is a semi-synthetic opium, 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 is sweet, unlike medicine. If you take it unconsciously for a long time, it will be addictive. It has been reported in the media that some people drink cold syrup containing codeine as a drink, regardless of illness, and finally become addicted.