The onset of action of ibuprofen varies from person to person and is related to the condition of the patient’s organism, but the vast majority of them can see the effect in about half an hour. Ibuprofen is mainly used for mild and moderate pain, including rheumatoid arthritis, gout and other diseases caused by pain. Ibuprofen usually starts to work half an hour after taking it, the pain relief effect will reach its peak in 2 hours, and the pain relief time usually lasts for about 12 hours. Some patients have lower body resistance and immunity, the pain relief effect may be greatly reduced, and the maintenance time will be shorter. Therefore, when localized pain or trauma occurs in the body, ibuprofen can be applied for pain relief to avoid other complications caused by pain. Ibuprofen has more indications, patients should not use the drug blindly. For the existence of gastroduodenal ulcer and other digestive diseases, if the body appears uncomfortable or pain, it is recommended to go to the hospital for examination, a clear diagnosis, do not take ibuprofen for treatment.