The severity of the side effects of the drug is related to the dosage of the drug, the patient’s tolerance level and other factors, there is no side effect size. Diclofenac sodium enteric-coated tablets commonly gastrointestinal adverse reactions, manifested as nausea and vomiting, stomach burning, acid reflux, and in severe cases, stomach ulcers, bleeding or even perforation, etc. There may also be headache and dizziness, rash and itching and other adverse reactions. Diclofenac sodium belongs to non-steroidal anti-inflammatory drugs, with antipyretic and analgesic anti-inflammatory effect, can be used for fever, osteoarthritis, rheumatoid arthritis, myalgia, toothache, dysmenorrhea and other diseases. Note that this product is contraindicated in children under 12 years of age. It is contraindicated in patients with active peptic ulcers or bleeding, with severe heart failure, and with a history of aspirin asthma. This product is an enteric-coated tablet and should be swallowed whole. Patients should use the medication under the supervision of a medical professional and strictly adhere to the doctor’s instructions.