The side effects of Dacronin Gum Paste on the human body are generally minor, and some people may experience mild headaches, anxiety, numbness, and convulsions after taking it. Dacronin Collodion is a drug for local anesthesia, belonging to local anesthesia and lubricant, it has the effect of surface anesthesia on mucous membranes, and it is generally used for laryngeal anesthesia and lubrication during upper gastrointestinal endoscopy, and it also removes the foam in the lumen, so as to make the field of vision clearer and alleviate uncomfortable reactions in the process of examination. During use, due to differences in patient tolerance to the product, occasional adverse reactions such as mild headache, anxiety, hot and cold sensations, and numbness are seen. If the dosage is relatively large, convulsions and cardiovascular inhibition can occur can lead to hypoxia, acidosis, bradycardia, arrhythmia and so on. Allergic to the drug is prohibited. Drugs should be used under the guidance of a doctor to avoid unauthorized consumption, causing unnecessary damage to the body.