Ibuprofen extended-release capsules allow the drug to be released gradually in the body, providing pain relief for 12 hours per dose. Ibuprofen extended-release capsules inhibit the synthesis of prostaglandins and have analgesic, antipyretic and anti-inflammatory effects. It is commonly used clinically for the relief of mild to moderate pain, such as joint pain, muscle pain and neuralgia, and also for fever caused by influenza. Ibuprofen extended-release capsules avoid excessive fluctuation of blood concentration after frequent administration of general formulations. Ibuprofen extended-release capsules are slow-release formulations, which allow the drug to be released gradually in the body and are easy to take. The toxic side effects of ibuprofen extended-release capsules are less than those of general preparations. Through the inhibition of cyclooxygenase, ibuprofen extended-release capsules reduce the synthesis of prostaglandins, thereby reducing tissue congestion and swelling and decreasing the sensitivity of peripheral nerve nociception.