Commonly used cough suppressants are divided into central cough suppressants and peripheral cough suppressants. Central cough suppressants suppress cough by inhibiting the cough center, and peripheral cough suppressants suppress cough by inhibiting peripheral cough receptors to feel the stimulus to achieve the effect of cough. Central cough suppressants include dextromethorphan and codeine. Peripheral cough suppressants include Narcotics, Benzonate, and so on.
1. Dextromethorphan: central cough suppressant, non-addictive, suitable for upper respiratory tract infections, bronchitis and other causes of cough, its adverse effects can be seen in dizziness, headache, drowsiness, agitation, lack of appetite, constipation, nausea, skin allergies. It is prohibited for women within 3 months of pregnancy, those with history of mental illness and lactating women.
2. Codeine: as a central cough suppressant, the drug has strong cough suppressant effect and can be used for intractable cough caused by lung cancer. The adverse reaction of this drug is that long-term application can produce tolerance and addiction.
3. Narcotics: The drug is suitable for dry cough caused by various diseases. Sometimes mild nausea, headache, drowsiness and other adverse reactions can be seen. It is not recommended for children, pregnant women and lactating women; large doses may excite respiration and cause bronchospasm.
4. Benzonamide: It can stop cough by inhibiting the afferent impulse of cough reflex. The adverse reactions of this drug are drowsiness, nausea, dizziness, rash, etc. in some patients.
Cough medicine only symptomatic role of cough, can not treat the primary cause of cough, if cough, it is recommended to the hospital to identify the cause of targeted treatment.