The package arrived very fast, despite I live more than half way across the world (North Macedonia in the Balkans). The package was discrete and securely wrapped. The reason why I ordered L-Theanine was to deal with stress and panic-like symptoms. I have struggled with panic issues for a while, and apart from avoiding triggers, nothing really works. That being said, I cannot evaluate the effectiveness of L-theanine, because it is hard to tell whether it works - I certainly feel better. I feel that the supplement works because the past two months have been a bit more hectic than usual, and yet the baseline stress level is either the same or even slightly reduced. I didn't changed anything apart from introducing this supplement. What I also did notice is vivid dreams. From the first day I started taking it, I have several dreams per night. I fall asleep easy, and there is no side-effect to speak of. I take my capsule in the morning, half an hour to an hour after breakfast. I've tried to take two at once, but didn't feel any noticeable difference. No drowsiness at all though. Mental acuity is perhaps sharper, but that might be for the reason my stress is slightly lifted . I've noticed is these glimpses of happiness - I'm generally a satisfied person, who experiences positive emotions, but due to frequent stress and a racing mind, I kinda forgot what it's like to feel complete chill and detachment, and to rest in happiness irrespective of the setting and the circumstances. Interestingly enough, I started to feel such experiences after a month of taking this supplement as well. Will definitely buy more.