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Starting at $6.75
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  • 25g Bag - $6.75
  • 50g Bag - $12.25
  • 100g Bag - $22.25
  • 250g Bag - $47.50
  • 500g Bag - $85.50
  • 1kg Bag - $154.00
  • 25kg - $1,701.39 Out of Stock
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You are buying L-theanine (also known as gamma-glutamylethylamide or 5-N-ethyl-glutamine), which is an amino acid and a glutamic acid analog commonly found in tea (Camellia sinesis) as well as other species of Camellia.

*NOTE: These statements have not been evaluated by the Food and Drug Administration.
This product is not intended to diagnose, treat, cure or prevent any disease.

Supplement Facts
L-Theanine Supplement Facts
Suggested Use
As a dietary supplement, take 100 mg (scant 1/6 tsp) to 250 mg (1/8 tsp) one to three times daily.
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Customer Reviews
Review by MeMe on 2/23/2014
What I've read about L-Theanine is true. Has helped me alot and within minutes of taking it. Not the best taste in the world, kind of an odd sweet taste, but ok enough to just put the 1/8t on my tounge and drink something to wash it down. it does not disolve well in beverages so that's why I started just putting it on my tounge. Really helped my focus and being able to concentrate as well as producing a very calming effect even though I did not feel any type of anxiety. I'd think it would work well for someone who has anxiety, but of course this is something you want to discuss with our Dr. Appears to be a high quality product, and as always I received my order very quickly! :o) Very Pleased as always!
Review by sdavidhicks on 5/28/2013
I've used PureBulk's l-theanine continuously for more than 6 months at a time and have also gone without it at various times. The main benefit I notice from using it is improvements in cognition. I seem to be able to take on challenging projects with clearer thinking and greater confidence than before. I can apply myself more productively and effectively over longer periods of time. This brings about better results in my work. That's why I keep coming back. The quality and taste of the powder has been consistent with each purchase. I usually swallow around 1/3 teaspoon with a beverage 2-3 times a day.

That's why I continue to purchase it.
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Size Conversion
  • 25g
  • 50g
  • 100g
  • 250g
  • 500g
  • 750g
  • 1kg
  • 1.5kg
  • 5kg
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  • 0.88 oz
  • 1.76 oz
  • 3.5oz
  • 8.8oz
  • 1.1lb
  • 1.65lb
  • 2.2lb
  • 3.3lb
  • 11lb