Etoricoxib anti-inflammatory molecule. Computer model of a molecule of the anti-inflammatory drug etoricoxib. Atoms are represented as spheres and are colour-coded: carbon (gold), hydrogen (white), nitrogen (blue), oxygen (red), chlorine (green) and sulphur (yellow, between oxygen atoms). Etoricoxib is a non-steroidal anti-inflammatory drug (NSAID), belonging to the family of Cox-2 (cyclo-oxygenase 2) inhibitors. NSAIDs inhibit the production of prostaglandins (by COX-2), the hormone-like chemicals that induce inflammation. Etoricoxib is used to treat rheumatoid arthritis, osteoarthritis, chronic back pain, ankylosing spondylitis and gout.