I have been taking fen fast for a month and I have lost 12.3 lbs. I started at 173 and today I weigh 160.7. I was hoping to do a little better then that in my first month, but 12 lbs is not bad. I am almost out of pills I think I should order another month or two as I would like to lose another 20 and get in a very healthy BMI range. I do already look better and my clothes are fitting better.