The analgesic effect of loxoprofen is relatively ideal, and the duration of taking one tablet for analgesia is 6-8 hours. Loxoprofen sodium tablets are commonly used as clinical antipyretic and analgesic drugs for mild and moderate pain caused by rheumatoid arthritis, osteoarthritis, lumbago, frozen shoulder, neck-shoulder-wrist syndrome and other diseases. The drug is a short-acting dosage form, and the analgesic effect can be maintained for 6-8 hours after taking one tablet orally. However, the metabolism time of the drug is related to the physical condition of the patient in addition to the nature of the drug itself. If the organism’s liver transformation function is reduced, the time of drug metabolism may be prolonged and the duration of analgesia can be prolonged. Loxoprofen sodium has heavy adverse reactions to human liver and gastrointestinal tract, so it is recommended that patients should pay attention to the dosage when taking it in general to avoid causing nausea and cardiac arrhythmia, and should not take it for a long time.