First discovered as a constituent of green tea leaves (Camellia sinensis) in 1949. L-Theanine is a non-proteinogenic amino acids and is considered a nondietary amino acid, not unlike L-Ornithine or L-Citrulline. L-Theanine is primarily known for its ability to promote relaxation without causing sleep and is often paired with Caffeine. It is thought that L-Theanine helps balance the negative effects of Caffeine that some people experience. Together, L-theanine and Caffeine are considered one of the most commonly used and popular nootropic stack options that may promote faster reaction time, numeric working memory reaction time and improved sentence verification accuracy.
L-Theanine benefits and uses may include:
L-Theanine may have positive mood-boosting effects as scientists have discovered that it changes levels of amino acids affecting serotonin and other neurotransmitters in the brain. L-Theanine may also help suppress glucocorticoids. Glucocorticoids are stress hormones that can have a negative effect on mood, memory and learning. L-Theanine may act as a glutamate antagonist and, in turn, balance the harmful effects of high glucocorticoid levels. This also suggests that L-Theanine may be neuroprotective as well.
Additionally, L-Theanine may promote better sleep. One Japanese human study where participants were given a daily L-Theanine supplement concluded that L-Theanine did not induce sleep or make them sleep longer - but rather that it improved sleep quality. Documented participant responses claimed that exhaustion recovery and feelings of being refreshed were enhanced by L-Theanine.
L-Theanine supplementation has been studied for its potential ability to reduce mental and physical stress, improve cognition, and boost mood and cognitive performance. It is also reported to promote alpha wave production in the brain. One study conducted by Unilever was able to confirm that even small amounts of L-Theanine were able to promote alpha wave production as indicated on an EEG (Electroencephalography).
As a dietary supplement, take one 200mg L-Theanine capsule daily.
L-Theanine may be synergistic with Green Tea Extract.
Nootropics Depot offers 90ct. or 180ct. jars of high quality L-Theanine Capsules (200mg). Nootropics Depot's L-Theanine has been lab-tested and verified for both product purity and identity. L-Theanine has been granted GRAS (generally recognized as safe) status in the United States.
You may also be interested in L-Theanine Free Form Powder or Caffeine L-Theanine Capsules.
To learn more, read the L-Theanine reviews and experiences below.
Scientific name: Gamma-ethylamino-L-glutamic acid
| *Attention: 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. |
Hubby and I take this supplement often. A few years now. It has helped out a lot. That little extra kick in energy and mental focus is great. I take mine with coffee in the morning a few days a week. Really helps cure the Mondays. Clear minded and ready for solutions with this one.
After reading lots and lots of very great reviews and people saying it either changed their life or did nothing, I thought I'd try my shot. This thing only makes me light headed and kind of prevent me from thinking straight. I can't work normaly after taking this and it has no significant impact on my anxiety (coffee driven or not). I also noticed I felt somewhat more emotional after taking it. And I'm a bit more social, in the sense that I talk more to people. I was expecting either good or no benefit from taking it, knowing everyone can't react the exact same way, but this is pretty bad for me. Maybe it'll work for you, there's countless people saying how much it was a godsent for them, just wasnt my thing.
Hubby and I take this supplement often. A few years now. It has helped out a lot. That little extra kick in energy and mental focus is great. I take mine with coffee in the morning a few days a week. Really helps cure the Mondays. Clear minded and ready for solutions with this one.
After reading lots and lots of very great reviews and people saying it either changed their life or did nothing, I thought I'd try my shot. This thing only makes me light headed and kind of prevent me from thinking straight. I can't work normaly after taking this and it has no significant impact on my anxiety (coffee driven or not). I also noticed I felt somewhat more emotional after taking it. And I'm a bit more social, in the sense that I talk more to people. I was expecting either good or no benefit from taking it, knowing everyone can't react the exact same way, but this is pretty bad for me. Maybe it'll work for you, there's countless people saying how much it was a godsent for them, just wasnt my thing.
L-Theanine stacks well with caffeine or goes great on it's own, good for sleep also
I’m new to nootropics depot. And I’ve had a previous l-theanine product from another brand that failed utterly. I’ve heard nothing but good things from reddit about this brand. The product worked out great! I felt it immediately after taking it and even gave my anxious mother a few.
I take 400mg at night and it helps to ease me to sleep and helps keep me asleep all night. Before i started taking this i would wake up all night and wouldn't get a full nights sleep. This stuff has been some of the only stuff that seems to work. It also helps to relax you, ease stress, and gives you a calm focus. The dose i take is more for sleep so i wouldn't recommend anyone to take 400mg unless you want it to help ease you to sleep
I wrote an extensive review about Magtein and Cognizin that relates to this product. Seems like the two initial supplements above went to another level after I added L-Theanine. This stack works really well for memory, but I felt like L-Theanine really improved my energy endurance during the day. Very, very pleased!
And I will review this again; The best L-Theanine on the market that I have found and a great price.
I read the reviews on L-theanine and decided to give it a try. As a mom with 5 kids, I never know what life is going to throw at me. I started BioTe identicals and had great success with hormonal imbalance that started the ball rolling on helping me not be irritated, anxious all the time, etc... I added L-theanine after reading the reviews and the anxiousness in the pit of my stomach is now GONE! I take one in the morning with coffee and one in the evening before bedtime - and I can back off when things are calm and smooth and start back up when I am agitated or getting anxious.. The most amazing thing is that I can handle what stresses are thrown at me without becoming anxious! I DO make better choices (with meals, etc) on L-theanine, maybe because my brain that usually travels at 200mph (and normal people at 60mph) is slowed down so I’m not as impulsive and I can think clearer. It is quite an amazing capsule that I will continue to take loyally! VERY impressed! My mood is calm and breezy on this - I think my kids like it the most for me! haha!
Some solid research regarding this supplement, its a great, safe addition to your stack
This is really great stuff. I take two a day with fish oil and coffee and feel much, much better than coffee alone. Highly recommend.
I really like this supplement as it gives me a calm yet alert state of mind throughout the day. It practically eliminates any brain fog I may feel and gives me a smooth (no jitteriness) form of energy and focus for many hours on end!
This has helped the long term effects of withdrawal from other GABAergics. Onset is slow and gentle, and I have noticed no rebound effect. For me, more than 200 mg per evening can result in effect continuing into the following day.
Paired with 8 ox of cold brew, ND's l-theanine helps to get my workouts happening just as well as the more expensive brand I'd been using.
This compound makes almost any stack possible ! great and essential stuff for neurohacking.
This gives me the calm and sense of focus I've been looking for. Great product that I will continue buying.
This supplement is great for stacking with caffeine. Reduces and eliminates jitteriness associated with high caffeine doses. Keeps you extremely alert without feeling like bouncing off the walls. Also great on it's own. I utilized this prior to going to large events and family gatherings and it worked wonders regulating anxious feelings and allowing me to enjoy myself. Highly recommended.
Stops racing negative thoughts from appearing. In theory that should help you focus more.
moderately effective
Before I purchased this product. I read it helps with focus and memory as well. I’m studying for a certification. I was really hoping this product would help me focus and it hasn’t helped :(. I’ve been taking this product for over a month now. The only thing I have noticed is I’m in better mood. I take one pill with a cup of coffee every morning. Can I take another one in the mid afternoon ? What would you recommended to take to help me focus while I study? Can some one please email me back.
I definitely feel the difference. Very good when fasting it takes the edge off.
