[polskibus]

That's interesting, your findings are contrary to what's generally reported. I haven't found data confirming any negative side effects for l-theanine including prolonged use. I suppose it all depends on an individual and dosage of all stimulants.

[inDigiNeous]

Yeah, it's interesting to hear that people have no side effect. It's not anything really substantial, but there is definitely some side-effect. I'm used to being really sensitive to any substances though, for example I couldn't drink 3 cups of coffee a day, that would drive me totally hyper.

But after all, that calming effect has to come from somewhere with L-theanine.