L-Theanine Powder
WHY DID YOU SCAN THIS QR CODE?
Because we believe you should know more than just the name printed on a pack.
Here you can discover:
WHAT L-Theanine is
WHY 200 mg
HOW it has been studied
WHO may find it useful
HOW to use it
WHERE it comes from
HOW we approach quality
And, where available, you can also access product-specific quality documentation such as the Certificate of Analysis (COA).
WHAT IS L-THEANINE?
L-Theanine is a naturally occurring amino acid found predominantly in tea, particularly Camellia sinensis.
Unlike caffeine, L-Theanine is not a conventional stimulant.
It has been studied in humans for its relationship with:
🧠 ATTENTION & FOCUS
🌿 RELAXATION
😌 STRESS RESPONSE
🧘 CALM MENTAL STATE
The goal isn't to overstimulate your mind.
It is about supporting a state where you can feel calmer while staying engaged.
CALM DOESN'T HAVE TO MEAN SLEEPY.
This is one of the reasons L-Theanine has attracted so much interest.
L-Theanine is not caffeine.
It isn't designed to give you a stimulant “rush.”
It is an ingredient that has been studied for its potential relationship with relaxation, attention and stress-related responses.
Think:
LESS MENTAL NOISE
↓
CALMER STATE
↓
CLEARER ATTENTION
Individual experiences may vary.
WHY 200 MG?
A CLEAR, PRECISE SERVING.
200 mg isn't just a number chosen for the label.
Human studies have specifically investigated L-Theanine at 200 mg.
A 2026 systematic review and meta-analysis examined 31 randomized controlled trials involving 1,168 participants. It found that a single 200 mg dose taken 30–60 minutes before cognitive testing significantly improved choice reaction time.
Another randomized, placebo-controlled human study investigated 200 mg/day for four weeks and reported improvements in several stress-related and cognitive measures in healthy adults.
Research has also examined L-Theanine at 100–400 mg doses for different attention-related outcomes.
THAT'S WHY OUR APPROACH IS SIMPLE:
200 MG.
ONE CLEAR SERVING.
ONE CLEAR INGREDIENT.
WHAT CAN L-THEANINE SUPPORT?
🧠 FOCUS & ATTENTION
Human research has investigated L-Theanine's effects on attention and reaction-time performance.
The latest meta-analysis found a robust short-term benefit specifically for choice reaction time following a 200 mg dose.
🌿 RELAXATION
L-Theanine has been studied for its ability to support a more relaxed mental state without functioning as a conventional stimulant.
😌 STRESS MANAGEMENT
Research suggests that L-Theanine may help support the body's response to stressful situations, although the size and consistency of the effect can vary.
🌙 EVENING & DAILY WELLNESS
Some controlled research has explored L-Theanine in relation to sleep quality and stress-related symptoms.
However, L-Theanine should not be presented as a guaranteed sleep aid or treatment for a sleep disorder.
L-THEANINE FOR YOUR DAILY ROUTINE
💻 WORK
For periods that demand sustained attention and mental engagement.
📚 STUDY
For students who want to build a calm, focused study routine.
🧠 MENTAL WORK
For people whose day involves concentration, decision-making and prolonged cognitive effort.
📱 SCREEN-HEAVY DAYS
For people spending long periods working or studying at a screen.
🌿 WIND-DOWN
For those who want to incorporate L-Theanine into a relaxation-focused routine.
WHY POWDER?
YOU KNOW EXACTLY WHAT YOU'RE GETTING.
Nurture Roots™ takes an ingredient-first approach.
Instead of hiding multiple ingredients inside a complicated proprietary blend, this product clearly identifies its core ingredient:
L-THEANINE
And its serving:
200 MG
The powder format also gives you flexibility in how you incorporate it into your routine.
SIMPLE.
FLEXIBLE.
TRANSPARENT.
HOW TO USE
200 MG PER SERVING
Mix 200 mg of L-Theanine powder with water or another suitable beverage, or use as directed on the product label / by your healthcare professional.
FOR ACCURATE DOSING
Because 200 mg is a relatively small quantity, we recommend using an accurate milligram scale for precise measurement rather than estimating with an ordinary kitchen spoon.
WHEN?
Human studies have investigated L-Theanine at different timings and dosing schedules.
A 2026 meta-analysis specifically evaluated a single 200 mg dose taken 30–60 minutes before cognitive testing.
Choose the timing that fits your personal routine and follow the product label.
THE NURTURE ROOTS PHILOSOPHY
KNOW YOUR INGREDIENT.
Modern supplements can become complicated very quickly.
Long ingredient lists.
Proprietary blends.
Unclear quantities.
Marketing claims.
We wanted to take a different approach.
NURTURE ROOTS IS BUILT AROUND A SIMPLE IDEA:
IF AN INGREDIENT MATTERS,
YOU SHOULD BE ABLE TO UNDERSTAND IT.
That means:
Clearly identified ingredient.
Clearly defined serving.
Purposeful formulation.
Accessible information.
Research you can explore.
Quality information you can verify.
NURTURE ROOTS
AN INGREDIENT RANGE BY OXIN NUTRITION®
Nurture Roots™ is not separate from Oxin Nutrition®.
It is a focused range created by Oxin Nutrition® for consumers who prefer individual, clearly identified ingredients.
OXIN NUTRITION®
Our master brand.
Focused on nutrition, supplementation and everyday wellness.
↓
NURTURE ROOTS
Our ingredient-focused range.
Simple, clearly identified ingredients designed with purpose.
↓
L-THEANINE
Your specific ingredient.
ONE BRAND.
ONE STANDARD.
CLEARER INGREDIENTS.
WHY OXIN NUTRITION®?
BECAUSE TRUST STARTS BEHIND THE LABEL.
A supplement isn't only about what's written on the front.
It's also about who makes it, how it's handled and whether the information can be verified.
Oxin Nutrition® states that its products are manufactured in-house, allowing greater control over manufacturing and quality-control processes. It also states that batches are monitored and quality checked during production.
IN-HOUSE MANUFACTURING
Greater control over the manufacturing process.
QUALITY CONTROL
Batch-level monitoring and quality checks.
NO MIDDLEMEN
Oxin states that its direct manufacturing approach is designed to support authenticity and product control.
AUTHENTICITY
Buy from the official Oxin Nutrition® ecosystem.
VERIFY THE PRODUCT
DON'T JUST TAKE OUR WORD FOR IT.
We believe information builds stronger trust than exaggerated promises.
That's why Oxin Nutrition® provides access to Certificates of Analysis (COAs) for products/ingredients where available.
The Oxin website currently provides a dedicated COA section and specifically lists L-Theanine among the ingredients for which COA access is provided.
🔬 CERTIFICATE OF ANALYSIS
[VIEW / DOWNLOAD COA]
Use the COA to explore the available quality information for your ingredient.
YOUR PRODUCT.
YOUR INFORMATION.
YOUR RIGHT TO VERIFY.
WHAT DOES THE RESEARCH SAY?
SCIENCE, WITHOUT THE HYPE.
L-Theanine has been investigated in human randomized controlled trials.
31
Randomized controlled trials included in a 2026 systematic review and meta-analysis.
1,168
Total participants across those trials.
200 MG
A dose specifically studied for acute cognitive effects.
ATTENTION
A significant improvement in choice reaction time was found following a single 200 mg dose in the 2026 meta-analysis.
STRESS
Research suggests potential benefits in stressful conditions, but effects are not uniform across every study.
OUR APPROACH
We would rather tell you what the evidence shows — and where the evidence is still developing — than promise results that science cannot guarantee.
WHAT YOU MAY NOTICE
Everyone responds differently.
Some people describe the desired experience of L-Theanine as:
Calmer
More composed
Less mentally scattered
Able to stay engaged
Relaxed without a stimulant-like feeling
But supplements are not magic switches.
YOUR EXPERIENCE MAY BE DIFFERENT.
And that's okay.
Our job is to provide a clearly identified ingredient and transparent information.
Your job is to decide whether it fits your routine.
FREQUENTLY ASKED QUESTIONS
Is L-Theanine a stimulant?
No. L-Theanine is an amino acid and is not a conventional stimulant such as caffeine.
Will L-Theanine make me sleepy?
Not necessarily.
Research has explored relaxation and sleep-related outcomes, but individual responses vary. It should not be marketed as a guaranteed sleep aid.
Why does this product contain 200 mg?
200 mg has been directly investigated in multiple human studies, including research involving attention and stress-related outcomes.
Can L-Theanine be taken with caffeine?
L-Theanine and caffeine have been studied together in relation to attention. One controlled trial investigated 200 mg L-Theanine with caffeine and found effects on certain attention measures.
However, individual tolerance to caffeine varies, so consider your total caffeine intake.
Is L-Theanine natural?
L-Theanine occurs naturally in tea, particularly green tea. The ingredient used in a supplement should be evaluated based on the specific product's manufacturing and ingredient specifications.
How do I measure 200 mg?
For accurate dosing, use a precision milligram scale.
Do not assume that a kitchen teaspoon equals 200 mg.
Can I take it every day?
Human research has examined both single-dose and repeated-dose use. However, individual circumstances differ. Follow the product label and consult a qualified healthcare professional if you have medical conditions, take medication, are pregnant or breastfeeding, or have concerns about suitability.
WHO IS THIS PRODUCT FOR?
Nurture Roots L-Theanine may be of interest to adults who want to incorporate an ingredient-focused supplement into a routine centred around:
FOCUS
CALM
RELAXATION
MENTAL CLARITY
DAILY WELLNESS
It is particularly relevant to people who value simple formulations and transparent ingredient information.
WHAT THIS PRODUCT IS NOT
We believe trust also means knowing what we don't claim.
L-Theanine is not a medicine.
It is not intended to diagnose, treat, cure or prevent anxiety, depression, insomnia or any disease.
It is not a substitute for professional medical care.
NO MIRACLE CLAIMS.
NO GUARANTEED RESULTS.
JUST A CLEAR INGREDIENT AND HONEST INFORMATION.
YOUR L-THEANINE, AT A GLANCE
| PRODUCT | DETAILS |
|---|---|
| Brand | Oxin Nutrition® |
| Range | Nurture Roots |
| Ingredient | L-Theanine |
| Form | Powder |
| Serving | 200 mg |
| Formula | Single ingredient |
| Purpose | Focus • Mental Clarity • Relaxation • Calm & Focus |
QUALITY INFORMATION
CHECK YOUR PACK
For product-specific information, refer to the label for:
Batch Number
Manufacturing Date
Expiry Date
FSSAI / Regulatory Information
Manufacturer Details
Net Quantity
MATCH YOUR PACK WITH YOUR PRODUCT INFORMATION.
If a COA is available for your product/ingredient, use the link above to review it.
THE OXIN STANDARD
SIMPLE INGREDIENTS.
CLEAR INFORMATION.
RESPONSIBLE NUTRITION.
At Oxin Nutrition®, we believe consumers should never have to choose between good nutrition and good information.
Nurture Roots™ brings that philosophy to individual ingredients.
KNOW WHAT YOU TAKE.
KNOW WHY YOU TAKE IT.
KNOW WHO MAKES IT.
READY TO EXPLORE L-THEANINE?
200 MG OF L-THEANINE.
ONE SIMPLE INGREDIENT. ONE CLEAR PURPOSE.
[SHOP NURTURE ROOTS™ L-THEANINE]
[VIEW COA]
[EXPLORE NURTURE ROOTS™]
NURTURE ROOTS™
BY OXIN NUTRITION®
PURE INGREDIENTS. PURPOSEFUL NUTRITION.
Ingredient-focused nutrition for people who want to know exactly what they're taking.
PRODUCT & REGULATORY INFORMATION
Product: L-Theanine Powder
Brand: Oxin Nutrition®
Range: Nurture Roots
Ingredient: L-Theanine
Serving Size: 200 mg
Form: Powder
Category: Nutraceutical
Storage: Store in a cool, dry place away from direct sunlight and moisture. Keep out of reach of children.
Important: This product is not intended to diagnose, treat, cure or prevent any disease. Individual results may vary. Use only as directed on the product label.
Manufactured/Marketed by:
Lotus Global Corporation / Oxin Nutrition®
Nagpur, Maharashtra, India