Diclofenac sodium extended-release tablets are painkillers, which belong to a kind of non-steroidal anti-inflammatory painkillers with certain anti-inflammatory and analgesic effects, the main ingredient is diclofenac sodium, which is widely used in clinical practice. Diclofenac sodium extended-release tablets are mainly used to relieve pain caused by chronic joint lesions such as osteoarthritis, rheumatoid arthritis, rheumatoid arthritis, gouty arthritis and spondyloarthropathy, as well as acute mild to moderate pain such as soft tissue rheumatic pain, toothache, headache and primary dysmenorrhea. If you need to take diclofenac sodium extended-release tablets, it is recommended that you take them under the guidance of a professional doctor, and take them on time, in the right amount and according to the course of treatment to help bring out the effects of the drug and reduce the possibility of adverse reactions. Note that patients who are allergic to the drug, those who suffer from severe heart failure, those who suffer from or have had recurrent active gastrointestinal bleeding, and those who are in the perioperative period of coronary artery bypass surgery should not take the drug and should confirm their condition before taking the drug. Diclofenac sodium extended-release tablets may cause mild nausea, vomiting, indigestion, dizziness, rash and other adverse reactions, which can usually subside on their own without special treatment. A small number of patients may experience serious adverse reactions such as gastrointestinal bleeding, visual disturbance, sensory disturbance, edema, etc. Patients are advised to discontinue the drug and go to the hospital in time to avoid aggravation of symptoms according to the specific situation.