I take a lot of supplements and remedies, and L-theanine has to be one of the most effective ones I've come across. I suffered from chronic anxiety most of my adult life, so it's no surprise that this relaxing formula would be a favorite of mine.
If you're feeling a bit on edge for whatever reason, 1-2 capsules of L-theanine will neutralize your brain function somewhat and put you in a state of non-drowsy relaxation. I've used it for years and it's never failed me. Don't expect miracles from it, and you won't be disappointed.