"i have been taking phentermine on and off since february 2009. i am 5&#039; 3&quot; and i weighed 169 pounds. immediately i had great results. i had tons of energy and was extremely happy. i wouldn&#039;t take them on the weekends but would continue to eat sensibly. the pill made me actually crave water and looking at food was like looking at a pile of rocks. i actually was worried that i wouldn&#039;t want to ever eat again.  i eat 2 apples in the morning and snack on walnuts/craisins during the day and then i eat a meal at night. so far, i have lost 19 pounds. i would like to know if anyone is having a clinched jaw, red eyes that seem to have a slight jabbing feeling to them?  i&#039;m not sure if it&#039;s my late nights/stress or side effects from phentermine."