"i was given phentermine yesterday and today is my first day taking it. i tried belvic but got no results. i do try to eat healthy making my own meals and avoiding junk food. i am 306lbs and 5&#039;10. i work out 3-5 times a week for at minimum an hour. since i started working out i&#039;ve been gaining weight not losing. i am going to increase my cardio. its hard for me to increase my cardio due to a hernatied disc that i have had for a long time but i believe losing weight will help me with that as well."