>L-Theanine? Does it work for you? I've taken it for some time now but I can't tell if it did anything. That is kind of a complicated question, at least for me. It does work, and it doesn't, Given how long we have known each other, you certainly know I am an alcoholic. That is to be expected. That being said, it doesn't matter if I am drinking or not drinking at any given point in time. Any activity I do, I will pursue, alcoholically. That includes drinking coffee. I will drink coffee, because it is pleasurable, until it feels like shit. L-Theanine helps me avoid feeling like shit, until I do. I don't feel 'jittery' when I take it in advanced. I would recommend it for any normal to heavy caffeine user. As far as I know, it doesn't have any negative affects.