Er Ding Granules is a proprietary Chinese medicine, the main effect is to clear heat and detoxify the toxin, the main ingredients are purple flower, groundnut, half lotus, dandelion and plate blue root, mainly used for acute and chronic pharyngitis and other upper respiratory tract infections. Its adverse reactions are not yet known, during the use of the drug need to follow medical advice. Precautions include avoidance of tobacco, alcohol and spicy food, not taking other tonic Chinese medicines at the same time as taking the medicine, caution for diabetic patients, those with serious chronic diseases such as hypertension, heart disease, liver disease and kidney disease should be taken under the guidance of a doctor. Children, pregnant women, nursing mothers and the elderly and infirm should take it under the guidance of a doctor. It is prohibited for those who are allergic to this product and should be used with caution for those with allergies.