Oxyphenbutazone is primarily used as a nonsteroidal anti-inflammatory drug (NSAID) to reduce inflammation, pain, and fever. It is commonly applied in the treatment of conditions such as arthritis, gout, and other inflammatory disorders. The drug works by inhibiting the production of prostaglandins, which are chemicals in the body that cause inflammation and pain. It is often administered orally or topically, depending on the severity and location of the condition. Additionally, oxyphenbutazone has been used in veterinary medicine to manage pain and inflammation in animals. However, its use in humans has declined due to the availability of safer alternatives and potential side effects, such as gastrointestinal issues and blood disorders.