According to the National Health Service of the U.K., ibuprofen is classified as a non-steroidal anti-inflammatory drug, or NSAID. Its primary uses are to alleviate mild to moderate pain, to relieve the symptoms of fever, and to relieve pain and inflammation in the joints in cases of rheumatoid arthritis.
Ellen Greenlaw of WebMD mentions that other NSAIDs are aspirin, typically sold under the brand names of Bufferin or Excedrin, and naproxen, which is also known as Aleve. They are all sold over the counter. These medicines may cause common side effects including nausea and stomach pain, heartburn or diarrhea. Rarer side effects may pose more serious health risks, including stomach ulcers and bleeding, hypertension or allergic reactions.