"started phentermine 37.5 on feb 3, 2015 at 272lbs.  currently at 258 lbs.  it was really exciting at first because i lost about 8lbs in one week.  then i gained back 2lbs. (no reason, just did.)  since then i have lost 0 to 2lbs a week.  i definitely feel that i am able to control my cravings and have some self control.  i love that!  what i did not love was the insomnia.  it was so awful that my dr. presribed ambien.  i am feeling much better with some solid sleep. i cannot express how much i hate using a drug to counteract a different drug.  i want to continue with the phen, i feel as if it is helping.  hate that i have to pay a dr. visit copay every month to get the prescription though.  doubles the cost of the phen."