Flunoxaprofen is a new nonsteroidal antiinflammatory agent that, like benoxaprofen, inhibits leukotriene rather than prostaglandin synthesis. The absorption and disposition kinetics of flunoxaprofen and benoxaprofen have been compared in six healthy volunteers after oral administration of 100 mg of each drug. The two drugs showed similar absorption characteristics, whereas the distribution and elimination processes were much faster for flunoxaprofen. The renal route of elimination appeared to contribute significantly less to the disposition of flunoxaprofen. These kinetic characteristics render less likely the risk of excessive drug accumulation with flunoxaprofen, especially in the presence of reduced renal function.