This product is created for animals and is not intended for human use what is onsior tablets for dogs onsior tablets contain the active ingredient robenacoxib and are licensed for the treatment of pain and inflammation associated with chronic osteoarthritis in dogs. Onsior is different from other nsaids. It's the only coxib class pain relief for cats and dogs with proven tissue selectivity. Onsior rapidly reaches therapeutic levels in the blood, concentrating in inflammatory exudate, found in areas of inflammation such as an osteoarthritic joint1. However due to its very short blood half life t½, onsior also rapidly exits the blood stream, staying only where it is needed while sparing the rest of the body from prolonged exposure. Product data sheet click here for product data sheet summary of product characteristics spc