Diclofenac Sodium Extended-Release Tablets have antipyretic and analgesic properties, and are mainly used to relieve symptoms such as fever and pain from colds. Diclofenac sodium is one of the common non-steroidal anti-inflammatory drugs, extended-release tablets are the dosage form, which can inhibit the cyclooxygenase enzyme in the body to play the effect of antipyretic and analgesic, and can be used to relieve colds, gout, ankylosing spondylitis, rheumatoid arthritis, and other diseases caused by the symptoms of pain and fever. Diclofenac sodium extended-release tablets after taking common adverse drug reactions are dizziness and headache, nausea and vomiting, diarrhea, rash, thrombocytopenia, etc.; coronary artery bypass grafting perioperative patients, patients with hepatic failure, patients with renal failure and patients with allergy to drug components and other patients with contraindications to the existence of the drug, prohibited to take diclofenac sodium extended-release tablets. Diclofenac sodium extended-release tablets need to be taken under the guidance of a physician, patients should not blindly self-medication.