I tried this recently at a low dose, 125 mg, and had strong side effects for a day or two. I took in the morning at about 9 but had serious trouble sleeping all night that night. It seemed to get me fairly wired. I fell asleep at night but woke up repeatedly and then couldn't get back to sleep. It also caused me to urinate a lot. It also had some positive effects and for that I'd really like to try to find a way to take it again. I read taking it before 3 pm should prevent sleep troubles but that did not work for me obviously. Has anyone else had trouble with this before, or know why it affected me so much at a low dose, or if there's anything I can do to be able to tolerate it, like maybe it needs another supplement to take along with it or, I don't know. Thanks.