"i am starting my third week on belviq..  i am down almost 7 lbs. side effects at first were feeling very tired, feeling cold, and dry mouth. i still seem to have low energy and can&#039;t seem to exercise with the strength i had before.  none are bad enough to quit at this point. it has totally diminished my appetite and craving for carbs. that alone is worth the $200/mo i am currently paying."