Lianhua Qingdian Capsule has the effect of clearing distemper and detoxification (removing distemper-heat and poison), promoting the lungs and draining heat, and is suitable for patients with influenza who have heat and poison attacking the lungs. According to Chinese medicine, cold cough is mostly caused by wind-cold and the loss of lung ventilation, so it is not suitable for the use of Lianhua Qingdian Capsule. Lianhua Qingdian capsule consists of forsythia, honeysuckle, ephedra, bitter almonds, gypsum, root, guanzhong, fritillaries, patchouli, etc. It has the effect of clearing the plague and detoxifying the toxin, promoting the lungs to release heat. It can be used in the treatment of influenza, which is characterized by heat and toxin attacking the lungs, manifested by fever, malignant cold (fear of cold), muscle pain, nasal congestion and runny nose, cough, headache, dry throat and sore throat, etc. It is not suitable for people with wind-cold flu. The drug is not suitable for people with wind-cold cold, and it is not advisable to take tonic Chinese medicines while taking the drug. Patients with cold cough are advised to go to regular hospitals for consultation and treatment under the guidance of professional physicians to identify the symptoms.