"i started phentermine 37.5mg on 9/1/15 i was 206.7 lbs. today is 9/6/15 and i weighed in at 194.4 lbs. i almost had a heart attack. i thought i was loosing my mind that&#039;s 12.3 lbs in 6 days , which is amazing i&#039;m hoping it continues like this. i gained a lot of weight since i had my son in may 2014 i weighed 177 and i went up to 206 this year and it&#039;s affecting my marriage. i am hoping to lose this weight fast !"