Ibuprofen is a medication in the nonsteroidal anti-inflammatory drug (NSAID) class that is used for treating pain, fever, and inflammation. This includes painful menstrual periods, migraines, and rheumatoid arthritis. It may also be used to close a patent ductus arteriosus in a premature baby. It can be used by mouth or intravenously. It typically begins working within an hour. 
Dosage: The dosage of this medicine depends on the prescription and instruction given by your doctor.
Precautions: Do not take this medicine without any medical consultation with your doctor.