Diclofenac sodium extended-release tablets are administered once a day and usually the duration of the drug is about 12-24 hours. Diclofenac sodium extended-release tablets are non-steroidal anti-inflammatory drugs, which are more effective in aseptic inflammation and can significantly reduce pain, improve inflammation and reduce fever. For inflammation caused by trauma or post-surgery, as well as rheumatoid arthritis, gout, ankylosing spondylitis and many other joint swelling and pain diseases, they can quickly relieve pain and sports pain, and reduce inflammatory edema and trauma edema. This drug is usually taken orally about 20-30 minutes after a meal and is well absorbed in the gastrointestinal tract. It usually takes effect half an hour after taking the drug and usually continues to take effect for 12-24 hours. However, patients should note that the drug should not be taken orally for a long period of time and should be discontinued in a timely manner after the symptoms have been significantly relieved; at the same time, the drug should be swallowed whole, not chewed, and warm water should be consumed while taking the drug.