Piroxicam was initially created for humans as a pain reliever. But with the proper dosage by your vet, it can also be administered to cats and dogs with some cancers, and as a pain reliever for arthritis. Piroxicam is a non-steroidal anti-inflammatory drug (NSAID), so it reduces both pain and inflammation. This drug is typically recommended for dogs experiencing neoplasia, a condition in which abnormal masses of tissue develop into tumors within the body. Consult your veterinarian if this is the right drug for you pet’s symptoms.