Diclofenac sodium cannot be taken continuously for three years. Diclofenac sodium belongs to anti-inflammatory and analgesic drugs, clinically used for the treatment of arthritis, rheumatoid arthritis, gouty attacks, dysmenorrhea and other diseases and pain and inflammation caused by surgery. It can cause a series of adverse reactions during administration, such as nausea, vomiting, diarrhea, gastrointestinal bleeding, rash and itching of the skin, and elevated levels of liver enzymes in the blood. The risk of adverse reactions increases as the duration of the medication increases, therefore, this product should not be used for a long period of time and should not be taken for three years in a row. It is contraindicated in people who are allergic to the product or other non-steroidal anti-inflammatory drugs, in patients with active gastrointestinal bleeding, in people with severe heart failure who have severely impaired liver and kidney function, and in pregnant women and nursing mothers. Avoid combining with other non-steroidal anti-inflammatory drugs, minimize the use of time and dose, avoid drinking alcohol during the use of the drug, need to monitor the presence of gastrointestinal bleeding. Specific dosage and dosage cycle is recommended to consult a professional doctor, under the guidance of the doctor to use the drug.