A surprising amount of foodstuffs can be classified as a drug. Not only does tea contain caffeine (in small quantities), but it also containes an amino acid, L-

A surprising amount of foodstuffs can be classified as a drug. Not only does tea contain caffeine (in small quantities), but it also containes an amino acid, L-Theanine, which can cross the blood brain barrier and has psychoactive properties.[1] Some people like the effect enough to supplement it.[2] [1]: http://en.wikipedia.org/wiki/Theanine#Effects http://en.wikipedia.org/wiki/Theanine#Effects [2]: http://www.amazon.com/Now-Foods-L-Theanine-Veg-Capsules-60-Count/dp/B000H7P9M0/ref=sr_1_1?ie=UTF8&qid=1423618089&sr=8-1&keywords=theanine http://www.amazon.com/Now-Foods-L-Theanine-Veg-Capsules-60-C...