You may get diarrhea after taking Lianhua Qingdian capsule. Lianhua Qingdian capsule is mainly composed of forsythia, honeysuckle, sizzling ephedra, fried bitter almonds, rhubarb, gypsum, Panax quinquefolium, fritillaria, licorice and so on. It has the efficacy of promoting the lungs to release heat, clearing the plague and detoxifying the toxin, and can be used to treat the symptoms of influenza in which heat and toxin attack the lungs. Common adverse reactions to Lianhua Qingdian Capsule include diarrhea, abdominal distension, abdominal pain, nausea, vomiting, retching, and rash, dry mouth, itching and dizziness. It is contraindicated for those who are allergic to this drug, and should be used with caution for those with allergies. In addition, avoid spicy, greasy and other stimulating food, tobacco and alcohol when taking this drug. You should not take tonic Chinese medicine at the same time when taking this medicine. Take the drug under the guidance of a physician, do not take the drug on your own, so as not to delay the condition.