Search  for anything...
Micro Ingredients

Pure L-Theanine Powder, 100 Grams (1 Year Supply), Filler Free, No GMOs and Vegan Friendly

  • Based on 785 reviews
Condition: New
Checking for the best price...
$15.99 Why this price?

Buy Now, Pay Later

As low as $3 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

Non-returnable due to Food safety reasons

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Oct 23
Order within 7 hours and 48 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • Micro Ingredients L-Theanine Supplements, 100 Grams (1 Year Supply), Filler Free, No GMOs and Vegan Friendly.
  • No Additives, No Preservatives, No Fillers, No GMOs, No Artificial Colors, No Soy and No Gluten
  • Scoop included to get the measurement every time. Take it daily with or between meals by adding it to a shake or smoothie, see what the most nutrient dense food on the planet is all about.
  • Powder lover? Take it naturally in powder for higher concentration, quicker absorption, easier on the stomach, and more ways to have fun.

Description

L-Theanine is an amino acid predominantly derived from tea leaves, with the highest concentrations found in green tea. It was discovered around 1949 and originates from the Camellia sinensis plant, which has been an integral part of Asian cultures for millennia. Besides tea, L-Theanine may also be found in certain natural mushrooms. Take 100mg to 200mg or scant 1/16 teaspoon to 1/8 teaspoon 1 to 3 times daily with water, juice or smoothie of your choice. NO PERSERVATIVES, ADDITIVES FREE, FILLERS FREE, NON-GMO, GLUTEN-FREE. We aim to ensure quality in the ingredients used in our dietary supplement for a better and healthier living. Micro Ingredient is a manufacturer, a brand, but more importantly a friend. We will always ensure our ingredients are additives free, fillers free, and Non-GMO. YOUR HEALTH, OUR PRIORITY!

Product Dimensions ‏ : ‎ 5.1 x 8.1 x 0.4 inches; 3.53 ounces


Date First Available ‏ : ‎ June 4, 2016


Manufacturer ‏ : ‎ Micro Ingredients=


Best Sellers Rank: #42,267 in Health & Household (See Top 100 in Health & Household) #1,384 in Blended Vitamin & Mineral Supplements #3,496 in Over-the-Counter Medication


#1,384 in Blended Vitamin & Mineral Supplements:


#3,496 in Over-the-Counter Medication:


Customer Reviews: 4.6 4.6 out of 5 stars (785)


Brand Name: Micro Ingredients


Item Form: Powder


Diet Type: Gluten Free


Product Benefits: Brain Health Support


Age Range Description: Adult


Container Type: Bag


Dosage Form: Powder


Model Name: Pure L-Theanine Powder


UPC: 711301494466 850084183843


Manufacturer: Micro Ingredients=


Global Trade Identification Number: 66, 43


Manufacturer Part Number: THN-0110


Unit Count: 3.53 Ounce


Item Weight: 0.1 kg


Item Dimensions: 5.1 x 8.1 x 0.4 inches


Number of Items: 1


Flavor: Unflavoured


Material Features: Gluten Free, No Artificial Colors, Vegan


Material Type Free: en_AE


Specific Uses For Product: Laboratory


Color: Red


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 23

This item is non-returnable:

Non-returnable due to Food safety reasons

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • IMPORTANT!!! READ MY REVIEW!!!
I did alot of research before I purchased this product. It does exactly what I researched it for. It is a nutrient that comes from the tea plant mainly and from some mushrooms also. I used it to help me relax. It promotes muscle relaxation and calmness. You can add it to coffee and it drastically reduces the jitters. I also use it for sleep with L-Theronate and Apigenin. L-Theronate is the only magnesium developed by Harvard that crosses the blood brain barrier to the neuro transmitters to promote calmness in he brain. Apigenin is a nutrient extracted from thr Chamomile plant. I'm not a scientist so bear with me. Apigenin binds to the GABA receptors in the brain. In other words it promotes better sleep. It helps you fall asleep faster and stay asleep longer. I am not a doctor so please consult with your doctor. I did. I have been using this combination daily for over 8 months now and my sleep has improved significantly. Plus at a certain time at night, no TV, computer use or cell phone scrolling and a set regular time for sleep. Otherwise I recommend this product. I like to use products in the raw form. I put the tiny scoop into a table spoon of applesauce and down the hatch. The nutrients hrlp wit cognitive function. I definitely recommend this product. ... show more
Reviewed in the United States on December 25, 2025 by lazarustoby
    • Works well for relaxing, and pairs nicely with coffee too
I absolutely LOVE L-theanine. Been using it for over a year now. I normally stay up through the night and when I take this, I can knock out. Little tip - I also mix it with coffee in the mornings to balance out the jitters.
Reviewed in the United States on April 21, 2026 by Lou
    • GREAT VALUE
Does what it says it does. No taste. Dissolves easily. GREAT VALUE for the money. 5 stars.
Reviewed in the United States on August 22, 2026 by Korotha Kofé
    • Not likely to last a year for most people
Good product, but it is not a one-year supply at my dose level. Also, the price is a bit high since it is only available in this small size from this brand. Check other seller for a better price in larger sizes. I take one 1cc scoop daily between my first and second cup of coffee. MicroIngredients' recommended dose is 250mg but very few people have drug scales that can measure that weight accurately. I use an extra scooper from Concret Creatine which is 1cc. At that rate, 100mg lasted just 3.5 months. I tossed the included scooper with the product since I didn't see a volume stamped on it. L-theanine does not dissolve easily, and you may not get the full dose pouring it into a liquid. Since the scoop is very small, I just put one scoop under my tongue for quick absorption. It has a pleasant taste anyway. Dave Asprey highly recommends L-Theanine with coffee to avoid the jitters. It is very effective for this use case. It is also very calming and will make you very mellow at 1cc other times, but I am used to its effects as I have taken it occasionally for the past 20 years. I take it now with coffee only since I am no longer living a stressful lifestyle. ... show more
Reviewed in the United States on September 4, 2026 by hNLFt8bDvJXVvp
    • Sleep better
Have migraine so I have this L-Theanine powder mix with water 30 minutes before bed. The tiny spoon come with the powder is very helpful, I sleep better.
Reviewed in the United States on March 8, 2026 by Meimei
    • Good product.
Works very well. Just make sure you are cycling this supplement, as with many supps one does become accustomed to it. I was using it every day, but now I use it only when I feel it's really necessary.
Reviewed in the United States on June 4, 2026 by Señor Pavo
    • Súper calidad
Súper bueno ! Lo compraré
Reviewed in the United States on September 20, 2026 by JOSE LUIS RODRIGUEZ PEREZ
    • Potent
I take a half scoop at nap time. Helps me fall asleep, but not stay asleep too long. Too much will knock me out and leave me feeling groggy, after I wake up. A little bit can take the jittery edge off caffeine, but prior experience has shown me that about 100 mg is all I need for that. When I'd take a 200 mg capsule, it would override the effect of the caffeine and start to make me feel sleepy. ... show more
Reviewed in the United States on August 2, 2025 by Not My Real Name

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...