I began taking 5-HTP for depression and anxiety and sleeplessness during a very emotionally stressful breakup. I have Not had an anxity attack since 3-07 which I had suffered from off and on for several years. I sleep so much better. I am able to think clearer and stay focused and concentrate so much better as well as improved my memory. I am thankful for this. My dr. wanted to put me on Wellbutrine. NO Thank U!