The Qnexa data released Wednesday were impressive, especially from an efficacy standpoint, where weight loss exceeded anything seen to date by competing drugs from Arena Pharmaceuticals (ARNA - Get Report) and Orexigen Therapeutics (OREX).
Qnexa will continue to be nagged by worries about safety, primarily the central nervous system side effects of topiramate.
Next up is the second phase III weight-loss study from Arena's drug lorcaserin, which should be released before the end of the month. After that, all three weight-loss drugs, Qnexa, lorcaserin and Orexigen's Contrave, will face the scrutiny of obesity doctors at the Obesity Society annual scientific meeting Oct. 24-28.
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