Celecoxib is a prescription medication used to treat pain, arthritis, and painful menstrual periods. Celecoxib belongs to a group of medications called nonsteroidal anti-inflammatory drugs (NSAIDs). These work by blocking chemicals in the body that cause pain and inflammation.
Celecoxib comes in capsule form and is taken by mouth, once or twice daily, with or without food.
Common side effects include stomach pain, upset stomach, and diarrhea.