"today is my first day taking phentermine.  i am 41, weight 213 and i&#039;m 5&#039;5&quot; tall.  i&#039;ve been huge now for a couple years, and i just keep getting bigger. the doctor said for me to take 1/2 of a 37.5 tablet for 4 days, and then increase to a full tablet each day.  i took 1/2 of a 37.5 mcg today.  i do feel a bit lit up, but not overly so.  i purposely haven&#039;t had caffeine because i have anxiety and too much caffeine really irritates me.  i don&#039;t like feeling sprung so i don&#039;t plan to have caffeine as long as i&#039;m taking it. 



i do feel a little bit out of sorts, though.  not really dizzy, per se, but kind of dazed."