Diclofenac sodium extended-release tablets are non-steroidal anti-inflammatory drugs with anti-inflammatory and analgesic effects. It is mainly used to cure toothache, muscle pain, tendonitis, synovitis, acute arthritis, dysmenorrhea, rheumatoid arthritis and other diseases. Diclofenac sodium extended-release tablets can inhibit the activity of cyclooxygenase, inhibit the synthesis of prostaglandins, with antipyretic and analgesic effects, while inhibiting platelet aggregation. Epigastric pain, nausea, vomiting, diarrhea, abdominal cramps, dyspepsia, flatulence and anorexia may occur after administration. Gastric or intestinal ulcers with or without bleeding or perforation. Contraindicated in patients who are allergic to the product, have a history of gastrointestinal bleeding or perforation following the application of non-steroidal anti-inflammatory drugs. It is contraindicated in patients with severe heart failure. It is generally contraindicated during pregnancy, especially in the second trimester. It is contraindicated in lactating women. Diclofenac Sodium Extended-Release Tablets are prescription medications and are recommended to be taken under the supervision of a physician and in accordance with medical advice.