The main side effects of Troxerutin Injection are digestive system side effects, neurological side effects and allergic reactions and other side effects. 1. Digestive system: this product can cause gastrointestinal reactions such as nausea, vomiting, diarrhea and constipation. 2. Nervous system: dizziness, headache and other symptoms can occur during the use of the drug. 3. Allergic reactions: this product occasionally see facial flushing, headache, anaphylaxis and other allergic reactions. Before using this product for treatment, patients should be carefully asked about their allergy history, and this product is contraindicated in patients with previous allergy to the drug. For patients using the drug for the first time, especially the elderly, liver function and kidney function should be monitored, and once rash, palpitation, chest tightness, blood pressure drop, etc. occur, the drug should be discontinued immediately, and consult the doctor in time. It is recommended that patients should go to a regular hospital before taking this product, under the guidance of a professional doctor, strictly in accordance with the instructions of the drug dosage or follow the doctor’s instructions.