Can L-theanine cause adverse side effects?
I took L-theanine for the first time and that night was very emotional, the next day I took it again and genuinely went crazy. I was so angry and irritable like I’ve never been before and had a complete breakdown. I started breaking stuff and ended up spraining my wrist from punching my punch bag too hard without gloves or wraps (embarrassing I know), I was screaming and crying down the phone to my boyfriend and couldn’t do anything to calm down. I tried meditating, having a relaxing bath, but nothing helped, I was furious for no reason. It wore off later in the day and everything that had happened that day felt like a blur and I couldn’t fathom why I had behaved in such a way. I haven’t taken it again since and have been completely fine, it might be a coincidence but nothing like that has every happened before, even when going through rough times, and I can’t think of what else it could be?