Ibuprofen belongs to the class of antipyretic and analgesic drugs and usually begins to work in the body 30-60 minutes after taking the drug. The mechanism of action of ibuprofen is to reduce the synthesis of prostaglandins by inhibiting the enzyme cyclooxygenase, thus ultimately achieving analgesic, antipyretic and anti-inflammatory effects. Therefore, it can be used to relieve pain, fever and inflammation caused by various reasons, such as dysmenorrhea, toothache, cancer pain, wind-cold type cold, and thoracic dorsal myofasciitis. It should be noted that the half-life of ibuprofen extended-release capsules in the body is 4-6 hours, so the number of doses in 24 hours is generally not recommended to exceed 4. The body sweats after taking the drug, so you can drink more water to replenish the water and promote the effect of ibuprofen extended-release capsules. In addition, because ibuprofen extended-release capsules are non-steroidal anti-inflammatory drugs, long-term use can cause damage to the gastrointestinal tract, so long-term and high-dose use is not recommended. The drug should be contraindicated in patients with peptic ulcers and active gastrointestinal bleeding.