Mike Havrilla: $VVUS $ARNA $OREX / Vivus files for FDA approval of weight loss drug Qnexa / Orexigen expected to file 1H10 / Arena filed 1 week earlier
Ruthanne Williams Roussel: As expected, Arena Pharmaceuticals (ARNA) filed NDA with FDA for weight loss drug lorcaserin. Shares of ARNA and rivals OREX, VVUS all up
Ruthanne Williams Roussel: If I knew (which I don't) that WSJ blog reflected the thinking of a source within Merck, then I'd say this should bode well for ARNA.