– Oxaprozin potassium is an orally active and potent inhibitor of COX, with IC50 values of 2.2 μM for human platelet COX-1 and 36 μM for IL-1-stimulated human synovial cell COX-2. It induces cell apoptosis and inhibits NF-κB activation. The inhibition of the Akt/IKK/NF-κB pathway by oxaprozin potassium contributes to its anti-inflammatory properties [1] [2].