Nabumetone is a nonsteroidal anti-inflammatory drug (NSAID) used primarily to relieve pain and inflammation associated with conditions like osteoarthritis and rheumatoid Arthritis. It works by inhibiting enzymes involved in the production of prostaglandins, which are responsible for pain and inflammation. Nabumetone is typically taken orally and is known for having a relatively lower risk of gastrointestinal side effects compared to some other NSAIDs. As with any medication, it should be used under the guidance of a healthcare professional.