I have not come across any info of varying levels of theanine in teas.

The BEST most therapeutic tea is "WHITE TEA". I know thore are many dirfferent kinds of WHITE TEA. It has a very high level of EGCG - a flavonoid that does many wonderful things.

Theanine is also called l-Theanine and is available in most all health food stores and the internet.

I get mine from http://www.biosynergy.com/theanine.htm

I get the 200 mg caps and I just poured it out of the capsule into my tea mug.

To get a true therapeutic effect you would need to drink 8 to 10 cups of tea per day. My bladder could not survive this every day so I have only two mugs of mostly green and white tea with one 200 L-theanine added.

I also have two Mega Green Tea extract caps each day. The AM one lightly caffeinated and the PM one is Decaffeinated. I like to get HIGH in the morning.

http://www.lef.org/Vitamins-Suppleme...ffeinated.html (decaffeinated)

http://www.lef.org/Vitamins-Suppleme...ffeinated.html (lightly-caffeinated)

A recreational cup of green tea each day is nice but ...there is no treatment effect to be expected.

jackD