L-theanine is an amino acid that’s obtained from green tea leaves. It’s generally recommended to take it alongside stimulants such as caffeine as it helps calm things down and ward off jitters.

However, only a handful of the products available out there are worth trying. And that’s why we’ll be comparing some of the best L-theanine supplements available on the markets currently.

Hopefully, by the end of this write-up, you’ll have an easier time deciding where to put your hard-earned cash.

Top L Theanine Brands in 2020

Brands

Price

Rating


Sports Research

$

Now Supplements

$

Bulk Supplements

$

Nature's Trove

$

Superior Labs

$

SymNutrition

$

Source Naturals

$$

Solgar

$$

Solaray

$

Pure Encapsulations

$$

1

Sports Research

The Sports Research brand has been in the industry for quite some time and has garnered a great reputation so far. They’re known for their prowess in producing high-quality vitamins. So, how do they fare when it comes to the production of nootropics?


Well, if the reviews posted about their products on Amazon are to go by, we think they’re doing pretty fine. Their L-theanine branded product, for instance, has fetched quite some good reviews with close to 90 percent of them being 4 stars and above.


Looking at this product’s supplement facts, it’s easy to see why people have fallen head over heels with it. First off, it contains 200mg of L-Theanine.


Worth noting is that what you get in this bottle isn’t generic L-theanine but the highly bioavailable Suntheanine. This is a premium ingredient that’s designed to specifically boost absorption within the digestive system.


So, if you’ve been trying all kinds of products and feeling nothing, this is a product you might want to give a shot.

Pros

  • Premium, active ingredient
  • Great packaging
  • Awesome, easy-to-swallow capsules
  • Great ratings on Amazon

Cons

  • Not vegetarian-friendly (due to Gluten capsules)
  • Contains coconut oil & beeswax as inactive ingredients

2

Now Supplements

Now Supplements is a renowned family company that has been operating right here in the US for many years. In fact, they’ve been around since 1968. So, you can bet they’re quite good at what they do all thanks to their many years of experience in this industry.


Their L-Theanine supplement contains 200mg which is well within the recommended daily dosage. And to top it all up, the company provides you with 100mg of Inositol.


Simply put, Inositol is the name given to Vitamin B8 that’s harvested from nuts, grains, and beans. Inositol plays a big role in calming down anxiety which makes it a perfect ingredient to have along with L-Theanine.


For that reason, we’d highly recommend the Now Supplement product as it is designed to be a stress-reliever.


However, it does contain two fillers i.e. magnesium stearate and silica. Fortunately, those are safe fillers that are commonly used even in top-tier supplements.

Pros

  • Good packaging
  • Made in USA
  • Optimal L-theanine dosage
  • Optimized for stress-relief

Cons

  • Contains fillers
  • Contains inositol (a non-nootropic ingredient)

3

Bulk Supplements

This is yet another nootropic maker that we have grown to love. It’s a US-based company that prefers to have most of its products in powder form.


While that might be a little inconvienent for anyone who prefers pills over powder, the company makes up for that by providing you with a really competitive price.


Here’s the deal – the company provides you with close to 2,800mg of L-theanine at $2.27. That’s equivalent to 14 servings of the product meaning you pay a paltry $0.16 per serving.


But there’s a catch. You’ve got to measure the powder using a spoon so that you can take it in appropriate amounts e.g. 1/8 teaspoon equals 243mg.


That can prove quite tedious and messy if you’re not particularly good at working with powders. However, if you’re a frugal shopper, this is definitely a deal worth checking out.


Note: Recently, the company has introduced pills for their supplement. However, their pills are made from Gelatin which is typically obtained from animal hooves and is, therefore, not vegan-friendly.

Pros

  • Great packaging
  • Clean ingredients
  • Affordably priced
  • Ships quite fast

Cons

  • Measuring the powder might prove tedious
  • Their pills are made from Gelatin

4

Nature’s Trove

Moving on swiftly, we meet this 200mg product from Nature’s Trove. It’s not one of the best known companies out there but they seem to be having a good reputation as far as their production and handling of L-theanine goes.


We did a bit of background check on this company and realized that it’s based in New Jersey. Other than L-theanine, they have a wide host of supplements including SAMe, Acetyl L-Carnitine, and Melatonin. They’ve probably been around since 2017 if the age of their Facebook page is anything to go by.


Back to their product, we absolutely love the fact that it contains 200mg per capsule. That’s just enough dosage to calm you down after an extremely busy and stressful day at work.


The product’s ingredient list is quite clean as it only features L-Theanine as the active ingredient. That said, it does feature a bunch of inactive ingredients among them Magnesium Stearate, Microcrystalline Cellulose, and Silicon Dioxide.

Pros

  • Affordably priced
  • Vegetarian-friendly
  • Good packaging
  • Easy-to-swallow tablets

Cons

  • Contains fillers
  • The vendor seems like a new kid on the block

5

Superior Labs

If you’re an advanced biohacker who is looking for the most powerful pills available, you’ll want to work with a potent product such as this one. Each serving of it contains 250mg of the active ingredient. That’s quite powerful in our view and should be avoided by first-time users.


The US-based manufacturer has set a track-record of producing quality products. Indeed, by looking at this product’s list of ingredients we could tell that it ticks all the right boxes as far as quality is concerned.


It’s made right here in the US and from a GMP-certified facility. What’s more? It only has one active ingredient.


On the flip side, though, it has natural rice concentrate as an inactive ingredient. In our view, it’s perfectly fine to have rice concentrate as a filler. But if you’re extremely choosy, you might want to instead settle for a product with nothing but the main active ingredient in the pills.

Pros

  • Highly potent pills
  • Great packaging
  • Made in USA
  • Ships quite fast

Cons

  • Might be too potent for beginners
  • Uses a generic form of L-theanine

6

SymNutrition

SymNutrition is a Hong Kong-based company that has defied the stereotype that Eastern products are of inferior quality. So far, this product has attracted loads of positive reviews with 90 percent of them heaping praises on it.


What’s more? The product goes for $0.12 per serving. As such, not only do you get great potency but also a good price per serving.


Talking about potency, the SymNutrition L-theanine packs 200mg per serving. That’s quite powerful and also beginner-friendly.

Pros

  • Professional packaging
  • Affordably priced
  • Relatively fast delivery times
  • Assessed in a GMP registered facility

Cons

  • Not US-made
  • Some say it makes them sleepy unless taken with coffee

7

Source Naturals

This company has been around since 1982. Yup, that’s close to 4 decades. So, what have they been doing right that has kept them at the top of the market for that long?


We think that they operate quite professionally. Not only do they run an FDA-accredited plant right here in the US but they also abide by all the standards set forth by the GMP.


Their product also seems quite well-made. It contains 200mg of the active ingredient. This is in keeping up with other top-tier products available out there currently and also health recommendations.


However, the product contains 76mg of calcium on its list of active ingredients. We’re not exactly sure why this company decided to mix calcium with L-theanine. It just doesn’t make any sense from a biohacker’s perspective especially since calcium isn’t a nootropic compound.

Pros

  • Reputable vendor
  • Vegetarian-friendly
  • Made in USA
  • Certified as Non-GMO

Cons

  • Contains fillers
  • Mixed reviews so far

8

Solgar

This L-theanine brand is made by Taiyo International INC.  This is a top-tier company behind the well-known Suntheanine premium ingredient. In fact, Taiyo has been producing Suntheanine since 1998. It’s their patent!


In our view, if you’re looking for nothing but quality, this is a product worth trying. It contains 150mg of L-theanine in Suntheanine form.


Given the potency of this special ingredient, we can estimate that it’s as powerful as 200mg L-theanine from generic forms.


What’s more, since you only need to take small amounts of it to feel the effects, you also help minimize the pressure on your kidneys and digestive system.


On the flip side, though, this product is quite pricey. It goes for $0.41 per serving. It might be worth paying for if you’re looking for the best there is in the market and prefer small-sized capsules over larger ones.


Another thing, this company has really outdone itself with its quality packaging. Their glass jar goes a long way in ensuring that the product that ends up at your doorstep is BPA-free.

Pros

  • High-quality Suntheanine
  • Best packaging so far (BPA-free)
  • Reputable company
  • Vegetarian-friendly

Cons

  • Contains fillers i.e. vegetable stearate & silica
  • Pricey

9

Solaray

The key reason why this supplement made it to this list is that it’s backed by a 60-day money-back guarantee. Yup, you read that right. It’s either the supplement works for you or your money back.


This is a really important measure because we have been coming across numerous complaints from people who thought that certain products didn’t work or them.


However, the Solaray L-theanine doesn’t come cheap. You’d need to pay $0.32 per serving of it which is quite pricey considering that there’s nothing special about the pills.


Although made from vegetable cellulose (instead of Gelatin), the pills contain 200mg of generic L-theanine. Therefore, it might not be as highly bioavailable as Suntheanine.


Also, this product contains 100mg of Green tea leaf extract. We’re not sure if that ingredient is really necessary for everyone. That said, it might come in handy if you’re on a weight loss journey.

Pros

  • 60-day money back guarantee
  • Vegetarian-friendly
  • Good packaging
  • Ships fast

Cons

  • Contains green tea leaf extract (a non-nootropic ingredient)
  • Pricey

10

Pure Encapsulations

With 400mg of Suntheanine available per serving of this supplement, we’d solely recommend it for advanced biohacking. If you’re a beginner and just looking for a product to calm you down, you might want to try with a smaller dosage e.g. 150mg and scale up as your body gets used to it.


The reason we’ve singled out this one for advanced biohackers is that it’s got a relatively clean list of ingredients. In fact, its only active ingredient is 400mg Suntheanine.


Other than that, it has got some hypoallergenic plant fiber as an additive which isn’t really a big deal unless you don’t like stuff made from wood pulp.

Pros

  • High potency
  • Clean ingredients
  • Ships fast
  • Great customer support

Cons

  • Pricey
  • Might be too powerful for beginners

Final Thoughts

You can hardly ever go wrong by adding L-theanine into your supplementation routine. It can help improve your quality of life and productivity.


We hope you’ll find a supplement brand you can count on from the suggestions above. All the best!