Celecoxib is a non-steroidal anti-inflammatory drug. Celecoxib is used to decrease growths found in the intestines of persons with a family history of this condition. For the relief of acute pain and the pain of menstrual cramps. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Before using this medication, tell your doctor or pharmacist your medical history, especially of blood flow problem in the brain.