Fenpropidol is the trade name of the drug, the correct drug name is ibuprofen extended-release capsules, taken by mouth, the onset of action usually takes about 30 minutes, but not all types of toothache taking ibuprofen extended-release capsules are effective. Ibuprofen extended-release capsules belong to non-steroidal anti-inflammatory drugs, mainly through the inhibition of prostaglandin synthesis to play the role of analgesic and anti-inflammatory. After gastrointestinal absorption, it usually works in 30 minutes. For pain caused by some endodontic diseases, such as pulpitis, mostly due to excessive pressure inside the teeth, oral ibuprofen extended-release capsules are usually ineffective and cannot relieve pain. For some pain caused by periodontal tissue diseases, such as wisdom teeth pericoronitis, periodontal abscess, usually have some effect. In addition, ibuprofen extended-release capsules can only relieve toothache, is not the way to cure, the drug should be used in accordance with the doctor’s instructions, and it is recommended to take after meals, peptic ulcer patients with caution. It is recommended to go to the regular hospital stomatology department, after a clear diagnosis of the cause of treatment.