"i&#039;ve been on belviq for 5 days.  i&#039;m taking it for thyroid related weight gain. i&#039;m 39, 5&#039;2&quot;, and 30 lbs overweight - diet and exercise have not worked. the first few days were rough.  severe dizziness, headaches, etc. in general, i could barely function, mostly because of the dizziness.  now at day 5, i&#039;m feeling much better, no headaches, dizziness is greatly improved, etc.  i have lost 1lb. in 5 days - this is impressive, as i was gaining 2 lbs weekly before belviq.  i don&#039;t have enough time on belviq to give a real review, just wanted to say hang in there, the side effects will subside after a few days.  mine were bad, i wanted to stop taking it, luckily i stuck it out.  i&#039;m very excited about what belviq can help me accomplish!"