Carprofen is a non-steroidal anti-inflammatory drug (NSAID) active pharmaceutical ingredient (API) primarily used in veterinary medicine, especially for dogs. It is effective in managing pain and inflammation associated with osteoarthritis, post-surgical recovery, and other conditions. With a typical purity of 98%, it serves as the key component in formulations such as tablets, chewable tablets, and injectables. Not approved for human use. Its chemical structure is a propionic acid derivative, providing targeted COX-2 inhibition for favorable safety in canines. Use under veterinary guidance to monitor for potential gastrointestinal, hepatic, or renal effects.