Just looked at the numbers compared to ARNA's Belviq, and V is doing much better, comparatively, on TRx vs. NRx:
B TRx = 11,652 NRx = 8,066 Refills = 3,586 (44%)
V TRx = 10,135 NRx = 4,495 Refills = 5,640 (126%)
That's pretty good actually - and we want to see that refill ratio continue to climb.