I tried an L-theanine supplement for anxiety. It had a notable short-term effect, but when I was off it my anxiety significantly worsened. Got better once I sto

I tried an L-theanine supplement for anxiety. It had a notable short-term effect, but when I was off it my anxiety significantly worsened. Got better once I stopped taking it, so I guess it was a dependency kind of thing. So, I would say that it definitely has an impact. Perhaps it would have worked better with a smaller dose.