Ibuprofen extended-release capsules can be taken for 3-5 days continuously. Ibuprofen extended-release capsules are non-steroidal anti-inflammatory drugs with anti-inflammatory, analgesic, and antipyretic effects, which are mainly used clinically for pain relief treatment of muscle pain, joint pain, toothache, headache, dysmenorrhea, etc. They can also be used for antipyretic and antipyretic treatment. The main side effects of ibuprofen extended-release capsules are irritation of the gastrointestinal tract and can increase the risk of bleeding. If ibuprofen extended-release capsules are taken in large doses for a long time, they may cause ulcers and bleeding in the gastrointestinal tract, and may even cause perforation of the gastrointestinal tract, which can be life-threatening. Therefore, if there is no significant improvement in pain after taking ibuprofen extended-release capsules for 5 consecutive days, or if the symptoms of fever are not relieved after 3 consecutive days, you should not continue to take them, but should go to a local regular medical institution. If bleeding gums, nasal bleeding, black stools, skin petechiae, and persistent and severe abdominal pain occur during the course of taking the medication, you should also stop taking the medication immediately and seek medical attention from your local regular medical institution.