Arena Pharmaceuticals (ARNA -3.6%) continues to give back some of the massive gains it enjoyed...

|About: Arena Pharmaceuticals, Inc. (ARNA)|By:, SA News Editor

Arena Pharmaceuticals (ARNA -3.6%) continues to give back some of the massive gains it enjoyed after the FDA approved its weight-loss drug Belviq. Orexigen, which surged on the news as well, is -4.7%. Vivus, though, (VVUS +1.5%) is still climbing ahead of an FDA decision on its Qnexa diet drug on July 17.