"i started taking phentermine 37.5 on february 27, 2014 and so far i have lost 13 pounds. when i first started i was very jittery with huge pupils. now that time has gone on, i am feeling much better. i do have horrible mood swings and can be fine one minute and snap on you the next. other than that, i am very impressed with the weight loss. my dr. did inform me that the second month i may not see as much change. i am determined to prove her wrong."