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L-Theanine Powder

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Price From: FROM $14.96

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L-Theanine Powder

Key Features

  • Pure powder
  • Relaxing agent
  • Non-GMO
  • Taste

  • Mixability

L-Theanine is an amino acid that is naturally found in green tea, which is a rich source of polyphenols that have antioxidant properties and promote overall health.


Serving Size & Timing

This supplement should be taken in servings between 100 and 200mg one to three times per day.

Nutritional Information

Supplement Facts

Serving size: 250 milligrams
Serving per container: *
Amount Per Serving % Daily Value**
L-Theanine 250mg *
* Daily Value not established.
** Based on 2,000 calorie diet


Sugar, soy, dairy, yeast, gluten, corn and additives.

As a dietary supplement, take 100mg (scant 1/16 tsp) to 250mg (1/8 tsp) one to three times daily.

US Standard Measuring Spoons
Spoon Size(level) milligrams
1/16 teaspoon 121
1/8 teaspoon 243
1/4 teaspoon 487



This supplement is considered pharmaceutical grade and contains no fillers of any kind. It is totally vegan and is derived from the tea (Camellia sinesis) plant.


Note: This supplement may lower blood pressure. Those who are currently taking blood pressure medication or have a history of related issues should first discuss use with a trusted health care professional. Take with caution.

L-Theanine should not be taken by anyone that has ever been diagnosed with liver or kidney disease or by women who are nursing or pregnant. While this supplement has no side effects at recommended servings, it may function as a sedative if serving size is not adhered to.


This product is soluble in water and has a broth-like flavor, similar to green tea. Since it is an amino acid, it should be taken along with other amino acids to avoid any deficiency. It should be stored in an area free from light, heat and moisture.

Customer Reviews

It works like a tranqualizer
Calms me down and helps me focus on my studies*

On 10/23/2016 sylvia said...

Very Effective
It is a great supplement for taking the edge off caffeine.
It also helped my slep.*

On 10/3/2016 Kelvin said...

i love it
products are by far the best value. i absolutely loved it. *

On 9/29/2016 Chris said...

i love it
products are by far the best value. i absolutely loved it. *

On 9/29/2016 Chris said...

i love it
products are by far the best value. i absolutely loved it. *

On 9/29/2016 Chris said...

L-Theanine is the incredible. This is one of the best supplements for relaxation and reducing stress, with zero side effects. It is safe and goes a long way when it comes to the end of the day. Its perfect to help get to sleep. I use L-Theanine regularly and have come to trust to provide the highest quality at the lowest price. Thanks.*

On 9/23/2016 Derek said...

L theanine powder
Great product. Just as advertised. It's easy to take down and works fast. Helps calm the nerves and ease the mind. I'll be keeping some on hand. *

On 9/14/2016 Adam said...

The best!
Will definitely be re-ordering a larger size!*

On 8/19/2016 robert said...

Takes the edge off a stressful day.
I work as a Wellness Specialist at a large international anti-aging and wellness company. I am very picky about what I put into myself. In the process of trying to customize a pre-workout for myself, I came across BulkSupplements. I have been pleased with the quality of these supplements and appreciate there is nothing added to them. The products I have been purchasing from bulk supplements I actually am able to obtain for a lower price than my excellent employee discount gets me from my employer. I have since began to suggest products from bulk supplements to my customers when appropriate. In a world of adulterated and questionable supplements, it is nice to have found another company that I trust for quality and purity. I recently purchased the l-theanine because of the excellent price. I am pleased with this product as well. It is supportive of restful sleep and can help take the edge off a stressful day.*

On 8/19/2016 Kevin said...

This l-theanine is unparalleled in quality. It mixes easily, has virtually no taste, and seems more potent (at equivalent milligram doses) than other L-theanine products I have used.

L-theanine helps me cope with the rigors of a hectic work/school life. When using L-theanine, I maintain a more level head and can concentrate with less fatigue and burnout. I generally take a small dose with my morning coffee and a small (but slightly larger) dose before bed. Awesome nootropic. .

A quick thank you is necessary, as bulk-supplements provides an excellent quality product at an unbeatable price. *

On 8/10/2016 Paul said...

This l-theanine is unparalleled in quality. It mixes easily, has virtually no taste, and seems more potent (at equivalent milligram doses) than other L-theanine products I have used.

L-theanine helps me cope with the rigors of a hectic work/school life. When using L-theanine, I maintain a more level head and can concentrate with less fatigue and burnout. I generally take a small dose with my morning coffee and a small (but slightly larger) dose before bed. Awesome nootropic. .

A quick thank you is necessary, as bulk-supplements provides an excellent quality product at an unbeatable price. *

On 8/10/2016 Paul said...

Bulk powder adds convenience to a great supplement
I have used L-Theanine for both myself and my dogs for several years. It helps to improve focus and quiet my racing thoughts, my dogs are less reactive to the unpredictable sounds of the world which reduces their stress. Every three weeks or so, I mix several supplements into pumpkin puree and freeze it into ice cubes for one of my dogs. It is so easy and fast to weigh the correct amount from the bulk powder for him vs opening all the capsules. I am in the process of converting as many of his capsulated products to bulk powder as possible. Thanks Bulk Supplements! *

On 7/3/2016 Alex said...

Great Product!!
L-Theanine is the best way for me to get the mental focus and sleep I need. This product is also great for reducing stress. Great costumer service and fast shipping! *

On 6/13/2016 Joel said...

Great Product!
Great Product, take when feeling anxious or stressed and really produces a sense of relaxation and calmness. Recommend this product highly for everyone!*

On 6/6/2016 Lawrence said...

GOOD for alertness and focus without the buzz
Fast shipment! L-Theanine works within an hour - calms me during stressful situations... I'm not so grouchy! I haven't tried it for sleep, just for calm in the morning and throughout the day. I take a scant 1/16 tsp in the morning and I'm good to go! If you have the set of tad, smidgen, drop, pinch, dash teaspoons, use the "pinch" - that equals 1/16 tsp, or 121mg... using a scant pinch spoon will be approximately 100mg! *

On 5/2/2016 Kimberlie said...

Really great pure L-Theanine. Has a nice effect with caffeine as part of my stimulant stack. Loved it and with really good shipping.*

On 4/15/2016 Philip said...

Great Product!
I am postmenopausal and have had sleep problems for years. I take this along with l-tyrosine, phytosterol, and ashwagandha about 30-40 minutes before bed and it knocks me out. Finally, I'm getting a good night's sleep!*

On 4/5/2016 Jennifer said...

Caffeine Optimized
L-Theanine is the perfect way to get the mental stimulant hit of caffeine (or other stimulants) while avoiding the resultant anxiety and blood pressure spikes. Also a very helpful sleep aid, if you're an anxious sleeper.*

On 3/29/2016 Connor said...

Great relax and sleep aid.
Sleep is one of three of the major components in building good quality muscle. You can lift all the weights in the gym, but if you don’t sleep, you won’t grow, it’s that simple. L-Theanine Is a good quality multi-benefit sleep aid/stress reliever.*

On 3/29/2016 Derrick said...

Awesome product
This company is the best! Great product! Effective.. Fast delivery...! *

On 3/27/2016 Gerard said...

L-Theanine powder Wow!
My 92 year old Mother-in-Law, suffering the effects of long term antidepressant use, including sleepless nights. She agreed to try to get off them. In an effort to help her with that, we gave her the following:
D3, Krill oil, Rhodiola Rosea, Alpha GTC, Pyridoxine, B12 spray, Thiamin, L-phenylalanine, 5-HTP, and L-theanine.

She responded well, but when we added the L-Theanine (last to arrive), she had marked improvement in her sleep and mood. Definitely worth noting! *

On 3/24/2016 Judy said...

satisfied customer
good product...arrived on time...good quality...will buy again.*

On 3/23/2016 gordon said...

This L-theanine was provided as a free sample in exchange for another review. So far, after only a few trials, we both found the L-theanine had an immediate calming effect, with increased feeling of tension later. Perhaps the L-theanine will be more continuously helpful if taken every few hours. Pure product, fast shipment. Bulk Supplements' customer service was outstanding as always!*

On 3/19/2016 Jonathan said...

I chose this product as my free sample. I've been interested in theanine since researching its cortisol lowering ability. I've been taking it on workout days and it definitely helps me relax and recover quicker from workouts!!*

On 3/12/2016 Terrance said...

L-Theanine powder
I received my order within a few days and have been taking it for the last few days, all I can say is wow! This is a great product that I purchased to Rhett rid of anxiety, and it has been working great! I would recommend this product to anybody who is looking to get rid of stress and anxiety. Bulk is a great company and their customer service is awsome as well. Thank you!*

On 3/3/2016 johnny said...

L-Theanine Powder, A Great Product!
As always, Bulk Supplements has surpassed my expectations of service and product quality wow! I am impressed with the quality of the product and how it lives up to the other customer reviews.

I have had difficulties all of my adult life with sleeping and being able to relax when I go to bed. I need to take a sleep aid before I go to bed to be able to sleep even for a few short hours. I have found that if I take the L-Theanine (242mg) about an hour before I take the sleep aid I fall asleep much sooner. If a person has difficulties sleeping it is amazing how much help a few minutes can be.

I would highly recommend this product. I find that it meets my needs and I will add it to my future orders. It is my hope that I can get off the prescription sleep aid and use the L-Theanine.*

On 2/26/2016 Robert said...

Calm and focused
This product is great in my post workout shake. I workout early in the morning and I'm caffeine sensitive. The theanine helps me to focus at work and stay on task.*

On 2/26/2016 Kevin said...

I received powdered L-Theanine about a week ago.I have been taking 200mg 3x a day,morning,afternoon and before bed.I have been fighting anxiety for 10 years now (64 yrs old) been on and off meds Lexapro etc.So far this is helping pretty good,takes the edge off without making me feel tired and helps me sleep.*

On 2/16/2016 John said...

Seems to work well
I've used this powder in the morning as well as at night for sleep. I do seem to feel more willing to get out and do things that usually bother me and I'm definitely sleeping better. The affects are very subtle but seem to be real.*

On 1/27/2016 Bill said...

Good Stuff
Always comes weighted accurately and seems potent enough. It works well in my daily stack and I've never had any problems getting my order quickly and efficiently. Barring any placebo in my mind, it is very effective. *

On 1/10/2016 James said...

Great Product, Fast Shipping, Excellent Customer Service
product seems pure and effective.*

On 1/10/2016 Lois said...

I received a complimentary supply of L-Theanine for a recent review of Bulksupplements Rhodiola Rosea. I have only been taking the L-Theanine for ten days, but I can assure you I am already feeling the results. There are many other Bulksupplement products that I am anxious to try. I have complete confidence in BS products. I highly recommend. *

On 12/26/2015 Jack said...

great sleep aid. I had been having trouble sleeping and this has done the trick. I sleep soundly throughout the night and wake feeling refreshed.
I recommend this to everyone.*

On 12/24/2015 Paul said...

Repeat Customer for a reason
I have ordered my Theanine from here multiple times, and will continue to do so in the future. The powder is accurately measured with every bag I have received after multiple weight tests on several analytic balances and digital scales accurate to .0001g ±.0001. Without doing a spectrum analysis on the powder I cannot attest to the purity, however I have always felt as though the effects have been substantial for what they are, and believe this to be a quality product.

I personally dose 200mg along with Caffeine twice per day to help with focus and mental stamina. I feel that it greatly helps. *

On 12/12/2015 Alex Jacobsen said...

Works as advertised
The powder is very clumpy but that's because it has no fillers! Theanine works great for calming/sleep! Product was shipped fast and in a responsible packaging! *

On 12/5/2015 emily said...

L Thianine
This is the second time i re-order this product it is great and pure from Bulk Supplements will not buy from other place full with additive do your research thank you Bulk Supplements for your fast and great service*

On 11/14/2015 Deva T said...

Excellent Product
Product arrived as described and worked as well as expected. There is really nothing better I can say about it! One caveat (although this may be a limitation of the product itself and not the manufacturing) was that the powder tends to clump up, making it a little difficult to combine evenly with other products without breaking up the clumps manually (very tedious to do). Again, not sure if that's due to how it is prepared or a property of the substance itself, just something I noticed.

I would not hesitate to recommend this product to anyone and have already ordered again!*

On 11/12/2015 Kyle said...

I haven't used this product long enough to give it 5 stars, but as of night 2 I seem to be falling asleep more easily and sleeping better. Shipping was super fast and the product is good quality. *

On 10/28/2015 Jennifer said...

best one i tried yet
I just wanted too say thank you ! i have tried L-THEANINE from other cheap websites and felt no effect . The 1st time i tried your L-THEANINE, i slept like a baby and have not slept like that in YEARS ! Thanks for keeping a superior product !*

On 10/24/2015 joseph said...

Highly Recommended
I purchased this supplement to help with sleep. Wow I was not disappointed. I've tried L- Theanine before with lackluster results but the purity in this supplement is truly evident. It works.*

On 10/1/2015 DAVID said...

This product works well. 300 mg before bed, and it helps me to fall quickly to sleep. Next day refreshed with no drowsiness. Melatonin always makes me groggy the following morning. This product doesn't and it kicks in within 20 minutes of ingestion. Will buy again.*

On 9/26/2015 Rick said...

Great product!
True l theanine and came promptly!*

On 9/19/2015 Curtis said...

I had been looking for my usual coffee that had this in it, only I couldn't find the coffee anywhere. I drank this coffee when in school and it helped tremendously when studying. I decided I needed to find some and add it to my coffee on my own. Man was I ever excited to find Bulk Supplements and the L-THEANINE in a powder! On top of finding it I also found that I couldn't have asked for more from a company: dosage information, nutritional information, and made in a way that so totally agrees with me. Let's not forget pricing, delivery, and packaging! I decided not only to share what I had bought with a few family and friends, but I also happily shared the website so they could look for their own needs.
The reviews were also a godsend. Hearing other people tout the product and company made me feel good about diving in on a larger scale from the first, instead of going with a smaller size to "see" for myself.
I have now been using this every morning in my coffee and find that I am getting the results I had been hoping for; awake all day sitting in front of a computer doing monotonous work, energy to do the things I had been putting off, and FOCUS! I will be continuing to order from them but it will be awhile before I finish my L-THEANINE. This powder form is truly perfect for my needs and its ease of use makes me smile.
I shared some with my best friend who suffers from anxiety and after adjusting her dosage says its working wonderfully for her focus and anxiety.
My youngest son has started taking it and after a couple of days I got to ask him what he thought, a man of few words "Can you keep me stocked?"
I can't say enough good about both the product and the company.*

On 8/22/2015 Danica said...

Great Product
This supplement doesn't give me a "feeling" per se. I've been under tons of stress lately switching jobs, and as a result, I've been biting down real hard due to anxiety. I've had anxiety problems in the past. I catch myself biting down and stop, but most of the time the damage is done and my teeth hurt for the rest of the day. After starting this supplement, once in the morning and again in the afternoon, I've noticed that I don't bite down at all. I don't feel zoned out or lethargic, but it seems the stress doesn't effect me physically. Mentally, my mind no longer races and it seems easier to think through my situation productively and calmly, whereas before I would just focus on the problem and not the solution - leading to more stress and confusion.
The people here at bulk supplements have really helped me more than they even know, and as a result, I've told anyone who will listen about this website. Sometimes the timing of things is just so perfect. Thanks again, Bulk Supplements. Two thumbs up!*

On 8/10/2015 Thomas said...

I'm very happy with my recent purchase of L-Theanine.
The quality is excellent,
and the customer service at is great !!
I recommend this product and this company.*

On 7/26/2015 Ron said...

Increased focus, helps take the jittery feel of the caffeine while maintaining energy and focus. Great product!*

On 7/15/2015 Phil said...

L- theanine powder
I have been using this product for many years not awared I can get it pure
without any fillers ,I am very happy to have found the Bulk Supplements where you can buy all my supplements pure ,not to mentioned their fast service it is excellent .*

On 6/23/2015 Theresa said...

L Theanine
Paired best with caffine! Enhanced focus is noticeable. I take pre workout but Im also taking them to study. Thanks BULK*

On 6/17/2015 Duke said...

Great product
I feel a lot better within a week on using this product *

On 6/6/2015 Johnny said...

Great product
I have been taking this product for couple of days and already feel better *

On 6/6/2015 Johnny said...

Works beautifully to take the edge off caffeine
I purchased L-theanine to complement the caffeine anhydrous from Bulk Supplements and their products work fantastically to increase energy and keep focus.

I don't have a pill capper yet, so I just mix my powders in a little shot glass with water. The caffeine/theanine mixture doesn't have a bad taste, at least, not compared to piracetam and choline.

I ordered on a Friday, selected standard shipping, and received my order on Monday. Phenomenal! And really cheap! *

On 6/3/2015 Kelly said...

Fantastic Product
I work in a very stressful position, one that demands a lot of concentration and effort. I try to balance it out with running and lifting. The combination of L-Theanine and Phenibut is extremely helpful in handling stress, anxiety and depression. It also gives a boost of energy, helping my workout when I'm tempted to say, "I just don't feel like it." Try it. *

On 5/31/2015 Davis said...

L-Theanine helps keep my immune system healthy after the stress of running five fifty-second sprints in the mornings
First I want to say that according to the BulkSupplements website this l-theanine is rated US Pharmaceutical grade, a very high grade of purity (higher than food grade). This US-based purity test assures that regardless of the circumstances of the origin and manufacture of this l-theanine that purity problems of any kind should be extremely unlikely.

I run five fifty-second sprints in the mornings. Over the past year I have gotten bad colds lasting over two weeks several times. I figured it was due to exercising too hard. I have progressively cut back from eight fifty-second sprints seven days a week to five fifty-second sprints three days a week. But even breathing through my nose the entire time while running I was still getting colds. Taking 0.6 grams of n-acetyl-l-cysteine (NAC) three times a day knocked out the colds and stopped most of the coughing and sniffling at the end of the runs as well. But the clinical trials (listed below) say the combination of cysteine and theanine should be even more effective.

One drawback of the l-theanine is that I no longer have that "extreme" feeling after exercising, a feeling that lasts all day. It was in anticipation of this extreme feeling that motivated me to exercise in the first place.

The following is a list of clinical trials, most double-blinded and placebo-controlled, recorded at the National Medical Library, MEDLINE, as abstracted by GreenMedInfo for l-theanine.

1. L-theanine supports immune function.
2. Cystine (a dipeptide of cysteine) and theanine supplementation restores high-Intensity resistance exercise-induced attenuation of natural killer cell activity in well-trained men.
3. The theanine content of tea may be responsible for it significantly increasing immune function in users, relative to coffee consumption.
4. L-cystine and l-theanine may contribute to enhancing the immune response against the H1N1 virus.
5. L-theanine reduces psychological and physiological stress responses.
6. A combination of Magnolia, Epimedium, Theanine, Beta Sitosterol, Phosphatidylcholine reduces serum cortisol responses to physical stress.
7. L-theanine appears to improve cognitive function in mice.
8. L-theanine protects against glutamate-induced excitotoxicity in a mouse model.
9. Theanine prevents memory impairment induced by repeated cerebral ischemia in rats.
10. Theanine suppresses oxygen-induced retinal neovascularization associated in a rat model of retinopathy.
11. L-theanine suppresses food intake in rats, and may lower insulin levels.
12. Theanine may assist in healthy brain function development in the offspring of those who consume it while lactating.
13. L-theanine attenuates beta-amyloid-induced cognitive dysfunction and neurotoxicity.
14. L-theanine provides neuroprotection against Parkinson's disease related pesticide neurotoxicants.
15. Theanine enhances the antitumor efficacy of chemotherapeutic agents.
16. Theanine inhibits the growth of leukemia and non-small cell lung cancer cells and enhances the anticancer activity of anticancer drugs.
17. Theanine inhibits the invasion of hepatoma cells.
18. Among healthcare workers for the elderly, taking green tea catechins and theanine may be effective prophylaxis for influenza infection.*

On 5/16/2015 Stephen said...

The effects aren't very pronounced, but seems to provide a slight calming effect. It mixes a little better with warm or hot water (usually mix into coffee), and can be taken more than once throughout the day.*

On 5/15/2015 Deandre said...

Will buy again
I've been using this only for a few days but I DO feel a bit more relaxed. I'm going to slowly increase my dose, I wanted to start slowly. I'm happy with what I've experienced so far and I'll order again!*

On 5/7/2015 Lynda said...

This has helped alot with my anxiety and mood. I will be ordering more.*

On 5/5/2015 Tim said...

Helps me with patience
I work in customer service and sometimes it's difficult for me to have patience when a customer is being difficult. Theanine helps me a great deal with this. Even my manager has commented on my improvement.*

On 5/1/2015 Paul said...

I found this product to be very calming. It eliminated racing thought which allowed me to relax and be more focused. I took 250mg, tid. I was able to watch a movie all the way through without distractions. I was able to fall asleep much more quickly. No taste. Mixed well with iced tea.*

On 4/29/2015 Kristina said...

This mixes well and relaxes me.I will buy again.*

On 4/25/2015 LUCETTE said...

Helps with focus and irritability
I mix l-theanine 1/8 tsp in my coffee every morning and it helps me feel calm, counteracts jitteriness from coffee, and improves focus. Sometimes I take a second dose in the evening if I am on edge or irritated and it helps with that also. Taking higher doses does not increase the effect for me.*

On 4/15/2015 Katie said...

Great Quality and Price
Like to take it before bad for good and deep sleep. Feel very rested and fresh in the morning. Also a very good combo with coffee*

On 4/12/2015 Nikita said...

l theanine
I like that it's pure and free of additives . No taste and mixes well. 5 star rating for price too.*

On 4/11/2015 lisabeth said...

great product and service
I tried this because my boyfriend uses it and wow this really made a difference instantly. I felt happier more focused. Definitely a great product! service and promptness of delivery was great thank you. *

On 4/6/2015 Melissa said...

Increases focus, as well as helping me sleep better
This increases focus when I take it with caffeine, and it seems to reduce my ADD symptoms as well (I have been professionally diagnosed with adult ADD.) I also tend to fall asleep easier and wake up feeling more refreshed.

It doesn't mix easily with water unless I use a hand blender, but this isn't much of a problem. Once it dissolves, it dissolves completely--no powdery residue on the bottom of the glass. You can also mix it into food, it has a mild taste which is slightly sweet and slightly salty.*

On 4/2/2015 Paul said...

Definitely has a calming effect when taken daily. I am a full time student and it definitely helps.*

On 3/20/2015 John said...

Lovely stuff
Took just under 200mg in a capsule along with some caffeine (as suggested by other reviews).

I feel so much more mental clarity; holding long, meaningful conversations is easy.

I think we have another winner. Thanks BS. *

On 3/12/2015 Daimon said...

this product works and works even better for productivity and focus when stacked with caffeine.*

On 3/11/2015 Justin said...

I've been using this about 2 weeks and noticed I am significantly more relaxed, especially in the morning. I am a college student taking 21 credits, so stress is high. But this works!*

On 3/7/2015 Chris said...

Great Product!
I meant to rate this product 5 stars! I was too busy writing about how great it is I think I ranked it 0!!!*

On 3/3/2015 Ryan said...

Awesome Product! Quick Shipping!!
I have been taking theanine for about a week now. It seems to have tremendous effects (but still subtle) compared to GABA. L-Theanine easily crosses the blood brain barrier, unlike GABA, but has similar effects. It is perfect for my anxiety, fear of public speaking, and stress. Even better, it does not effect my performance at all. If anything, I can think more clearly. It does not slow you down cognitively like anti anxiety prescriptions, and does not make you sleepy (but definitely relaxed). I'm not a big tea drinker, so this is my alternative way of getting L-theanine. The product is great and I have had lightning fast delivery from this company 2 times now. I highly recommend it if you have anxiety or social phobia of any kind. Buy this now!*

On 3/3/2015 Ryan said...

Very high quality L-Theanine
I have taken 200mg of L-Theanine daily for quite a few years and the effects have been transformative. It calms my nerves leaving me in a pleasant and productive state of consciousness. The L-Theanine from Bulk Supplements is some of the best I've encountered, and I highly recommend it to anyone and everyone.*

On 1/17/2015 Conrad said...

Cap this and pair it with caffeine for a productivity supplement.*

On 1/16/2015 Mike said...

Great Product, Great Company
This product is great for reducing my stress and anxiety, the price is competitive, and the company has great Customer Service- I have finally found a company that I trust! Thanks, Bulk Supplements!*

On 1/16/2015 Courtney said...

L-Theanine perfect with Valerian root for alleviating stress
Theanine works as advertised and when coupled with Valerian Root, this works wonders! *

On 1/14/2015 Derek said...

I don't need that much of L-Theanine to feel its effects. Just 100 mg twice a day, usually morning and lunch gives me an alert feeling without putting me to sleep. Will continue use for a month or so to see if I want to add to my regime.*

On 12/22/2014 Paul said...

Highly effective product!
I have found that this product really does help to reduce anxiety, calm the mind, and allow me to focus for several hours. A large bolus taken at bedtime also puts me to sleep with relative ease, and doesn't seem to have the "hangover" effects that diphenhydramine or other antihistamines have. Will definitely consider this a staple in my supplement suite. *

On 12/17/2014 Michael said...

Multiple Beneficial Effects
I have been taking theanine for its little known anti-histamine action so that I can avoid otc anti-histamines that jack up your liver. The dopamine boosting effect is pretty sweet too. Unfortunately, the substance only has a half-life of 2-3 hours, so you do have to re-intake throughout the day. Great price here.*

On 12/8/2014 sean said...

Great for Anxiety and Pre-Workouts!
Bought this for both anxiety use as well as pre workout use when mixing with caffeine. I have suffered from anxiety for a few years and never liked taking benzos. This helps calm me and really work well with caffiene to take away the jitters! Mixes well and great price!*

On 12/4/2014 Mike said...

L-Theanine (50 g pure powder)
I work in the herbal health foods industry and have read a lot of positive articles about the benefits of L-Theanine, which is essentially highly concentrated green tea extract. It basically gives you a state of "calm focus" without any negative side effects. I've found the Bulk Supplements powder to be extremely fast-acting. I take it at work when I really need to focus and/or when I'm under stress. Great stuff. The company's trademark fast delivery sealed the deal. Will order again for sure.*

On 10/9/2014 Robert said...

Ultimate zen
If you want to remain calm and yet focused, this is the product! If you get nervous taking tests, speaking to groups or doing anything else where you need to be calm yet at the top of your game, this is the only product you need! Gives those taking it an 'unfair' advantage during tests. It allows you to access the information you have that is usually blocked by anxiety. Can't say enough about how great it is. I first tried it in pill form I bought at a vitamin shop - and paid 20 times what I did here. Thanks guys!*

On 9/29/2014 rich said...

It works great together with caffeine! It gets rid of all the negatives such as the jitters and the anxiety. *

On 9/28/2014 Justin H said...

Best L-theanine
I didn't buy this for a nootropic, I didn't even know about nootropics at the time I started taking this supplement two months ago. I was recommended to take it to help my body relax. I have a neurological pain disorder and have trouble relaxing as well as chronic pain. I can feel the relaxation wash through my body after taking 1/4 tsp, it helps me sleep and my pain has drasitically reduced. My cognition is doing better but not sure if it is just the L-theanine because I am doing a stack that has boosted my brain a lot. I really recommend BUlk supplements, not only are they fast at getting me the product but they are very fresh and their purity is unmatched. I had tried other L-theanine supplements but they all had cellulose added and did not benefit me at all. I am so grateful to have found this pure powder. I haven't needed pain medication since starting my stacks.*

On 9/17/2014 A. said...

Works for my Anxiety where all others have failed.
I have tried dozens of other L-Theamine/Suntheamine supplements on the market. Both pure and mixed with other ingredients. This is the only that has worked for me. I mix it with caff product like Diet Coke.*

On 8/31/2014 Randall said...

calms my mind without sleepiness
this is a great product to add to my protocol daily. relaxing yet it won't make you sleepy*

On 8/28/2014 Joseph said...

L-Theanine works wonders.
I have been using this product for the last 2 weeks and I can honestly say it does work extremely well. The price is good and the quality seems to be high grade stuff. Thank you bulksupplements*

On 8/22/2014 William said...

Great Nootropic
L-Theanine is a great nootropic, in other words, it helps with cognitive function. I've used it to take important exams and also as a part of a preworkout supplement. The mental clarity it gives me, coupled with caffeine is incredible. There are some days I go to gym after a long day at work, and Theanine delivers in getting me focused in ways that caffeine alone cannot do. My only gripe is that the powder is a bit on the sticky side. Think flour consistency instead of sugar. However, this is the nature of the compound, and NOT the manufacturer. This minor nuisance is far outweighed by Theanine's cognitive benefits. I'm definitely buying more. *

On 8/15/2014 Mike said...

II need L-theanine for my anxiety
I've been spending a lot of money on L-thenine caps for months now.
I've found it really helps with my anxiety.
I use it with GABA and have been much more calm and stressfree since I've been using it.
To find a pure, high-quality L-theanine here for 1/10 of the price I'm paying for the pills is extraordinary!
I wish I'd know about Bulk Supplements a long time ago.
I'll be ordering a lot of other products in the future.

On 8/14/2014 Liz said...

I ordered this product not thinking it would have that much of an affect on my general mood but it has. I started taking it during the day and I am much more relaxed in general.*

On 8/8/2014 colby said...

Great stuff
If you're looking at getting this, it's highly likely you've done your research. Theanine is a great, natural relaxant. I sometimes mix it with caffeine to avoid feeling jittery, but usually just take it by itself in the morning and evening. I can hardly taste it even when mixed with just a few ounces of water. I actually didn't realize I had taken it before: I used to take melatonin while I was in college to make sure I got enough sleep, and the pills I took were a mix of melatonin and theanine. No ill effects after having used this product for several years on an almost daily basis.*

On 7/14/2014 John said...

Works for me, sleep aid and anti-anxiety
200mg to 600mg during the day/morning helps with anxiety.

same dose when combined with phenibut (bulk sup as well) will help with easing to sleep.*

On 7/7/2014 Curtis said...

Calm before bedtime
Add 100mg to casein protein to relax on those overwhelming days. Great price and mixes well. *

On 6/7/2014 Darius said...

High Quality
This is a high quality product - Pure, no fillers. I dose between 100 - 200mgs for nice relaxing effect that isn't over-sedating. Excellent customer service as well!*

On 4/30/2014 Jeff said...

I love it!
I am in college and I take this along with the caffeine powder Bulksupplements sells and it is the perfect combination, awake but not jittery. I put this in my drink and have it all day long. *

On 3/21/2014 JoEllen said...

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