Deramaxx is a non-steroidal anti-inflammatory drug (NSAID) used in dogs to control pain and inflammation. It is particularly effective against osteoarthritis, a degenerative disease that affects your dog's joints. It is available as beef-flavored, scored, chewable tablets. Deramaxx works by reducing substances that cause pain, inflammation, and fever in the body. Deramaxx is also used to reduce pain associated with surgery or dental procedures. Deramaxx requires a prescription from your veterinarian.