I took ~200mg, you can buy 200mg capsules on amazon. I haven't noticed any kind of tolerance, although just in case I no longer take it daily, as I do worry abo

I took ~200mg, you can buy 200mg capsules on amazon. I haven't noticed any kind of tolerance, although just in case I no longer take it daily, as I do worry about a possible rebound of anxiety. I've probably taken as much as 600mg in one sitting to no known ill effects. Wikipedia page similarly seems to confirm no known harmful effects from theanine. Also it is present, albeit in smaller quantities, in green and black tea. And the ratio of theanine to caffeine allegedly increases with longer steeps, although I haven't confirmed by checking, oh, what was it, dissociation constants that determine rate of dissolution? Anyway, CBD edibles/tinctures work as well, although our friendly neighborhood Dr. DEA has listed CBD as schedule 1 (!) so, you know, use at your own risk. I recommend it though.