"i started taking this back around the last week in december of 2015. it is now january 24, 2016. i have only lost 6 pounds. i am very active and my diet has improved drastically, so i don&#039;t know why it hasn&#039;t worked for me. i have been debilitated by the crippling headaches up until 2 weeks ago. the were like the worst headaches of my life on a daily basis for weeks on end. i thought i was going to loose my mind and my job. yes, i stayed hydrated and ate right, so it wasn&#039;t that. i&#039;m dissapointed. i&#039;m going to stop taking it now because research says tolerance sets in after a few weeks and one should discontinue therapy."