Chuanbei loquat syrup has the efficacy of resolving phlegm and relieving cough, clearing heat and promoting the lungs, and its consumption usually does not lead to loss of voice. The syrup is mainly composed of Platycodon grandiflorus, Platycodon grandiflorus macerated ointment, menthol and loquat leaves, and can be used clinically to treat cough, coughing yellow phlegm, sore throat, coughing unpleasant phlegm, chest tightness and distension caused by wind-heat and phlegm-heat stagnation; or bronchitis, colds and flu to see the above symptoms. Adverse reactions and contraindications after taking Chuanbei loquat syrup are not exact, and there is no clear reaction to produce loss of voice after taking it. Wind-cold cold can not be taken, taking 3 days without effect should be discontinued to seek medical attention. Taking Chuanbei loquat syrup need to get a doctor’s guidance.