"A research director for Pfizer was positively buoyant after reading that an important medical conference had just featured a study claiming that the new arthritis drug Celebrex was safer on the stomach than more established drugs. “They swallowed our story, hook, line and sinker,” he wrote in an e-mail to a colleague. The truth was that Celebrex was no better at protecting the stomach from serious complications than other drugs. It appeared that way only because Pfizer and its partner, Pharmacia, presented the results from the first six months of a yearlong study rather than the whole thing."
Read article in the New York Times (USA)
Really I don't think arthritis painkilling drugs are worth the candle. They've done a great deal of harm over the years. See my posts about Vioxx, for example.
You can reduce the pain of osteoarthritis by the simple expedient of seriously cutting down on salt and salty food. This dietary measure also lowers high blood pressure, reduces your risk of heart attack, stroke, depression, fractures, some cancers and many other degenerative illnesses, as well as reducing excess weight caused by fluid retention and helping with breathing problems. - What's not to like? - Try it! - You will feel so much better!