I just started taking it two weeks ago so not sure how it will work for me. The first week had little noticeable effect but when I increased the dose the second week it kept me awake (I have learned to take in daytime), caused mild anxiety and suppressed my appetite. The reason I wanted to add a med was because I was sleeping 12+ hours per day so it has helped that. Unfortunately just because I am awake doesn't mean I am productive.