Dr. Scott Kahan, an obesity expert at Johns Hopkins University in Baltimore and director of the National Center for Weight and Wellness in Washington, D.C., agreed that Qnexa looks promising.
"The weight-loss effects are striking and approaching the amount of weight loss over two years that we get with bariatric surgery," Kahan said. "This is really impressive."
Learn more about weight-loss medications at the U.S. National Institutes of Health.
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