"i was on phentermine for almost 2 months, i started out weighing 175 pounds and now i am at 155.50. i started out with bad headaches, numbness of feet, cold feet, tingling legs and no appetite.  i am a 38year old female. i was recently seen at the dr&#039;s office. i went in for my monthly checkup, i was feeling sick my head was hurting bad and i was short of breath. i complained of my feet being numb and my legs feeling tingly. i was immediately taken off the medication. my heart was beating irregular, they said this was a reaction to the medicine and i was feeling sick because my heart was beating irregular. i was admitted from the dr&#039;s office to the emergency room. i will now be seeing a heart specialist to see if there&#039;s any permanent damage"