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L-Theanine (200mg)

L-Theanine (200mg)

Relaxation support without the drowsiness. NutraBio L-Theanine is the amino acid found naturally in green tea, used to help you feel calmer and more focused through a full day.

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L-Theanine (200mg)
$22.99
$22.99
NUTRABIO QUALITY GUARANTEE

NUTRABIO QUALITY GUARANTEE

Made in the USA • Third-Party Tested • Fully Transparent Labels • Fully Dosed Formulas

Relaxation support without the drowsiness. NutraBio L-Theanine is the amino acid found naturally in green tea, used to help you feel calmer and more focused through a full day.

Description

How To Use

Key Ingredients

Dietary Restrictions

Delivery & Returns

SKU: 24516
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Pure Calm, Focus & Mental Balance

Most things that help you relax come with a cost. You feel calmer, but you also feel slower, heavier, and ready to be done for the day. L-Theanine works differently. It supports a settled, quieter state while your alertness stays intact, which is why it belongs in your morning just as much as your evening.‡ One capsule, one ingredient, at the serving size the research is built on.

200mg
L-Theanine
Single
Ingredient Formula
ZERO
Fillers or Excipients
100%
Vegetarian

The Science-Backed Edge

Every ingredient is chosen with purpose and backed by science to deliver meaningful results. Whether it’s wellness or performance, each formula is fully dosed and built with innovation to help your body function at its highest potential.

A bottle of NutraBio L-Theanine relaxation support supplement sits on a counter, surrounded by white capsules, with a blurred kitchen background.

Live Without Compromise

We are dedicated to helping you achieve real results by ensuring every product is made with the highest-quality ingredients and uncompromising standards. Our commitment to excellence is built to help you reach your potential and live without compromise.

  • A black silhouette of a person sitting cross-legged in a meditative yoga pose, with a geometric, angular outline and white border.

    Relaxed, Not Sleepy

    This is what sets L-Theanine apart from most relaxation ingredients. It supports a calmer state without leaving you heavy or foggy, so it fits in the morning just as easily as at night.‡

  • A bold black hexagon with a circle in the center, surrounded by a hexagonal outline. Four thick arrows extend outward from the hexagon in the up, down, left, and right directions.

    Focus That Comes Easier

    When your head is quieter, concentrating takes less effort. L-Theanine supports the kind of settled attention that makes it easier to stay with what you are doing.‡

  • Black silhouette of a human head in profile with a white lotus flower inside, symbolizing mindfulness, mental well-being, or inner peace.

    A Quieter Mind

    L-Theanine is studied for supporting alpha wave activity in the brain, the state your mind settles into when you are relaxed but still alert. In plain terms, it helps the mental noise turn down.‡

  • A black stylized crescent shape with a check mark in a hexagon at its base, accompanied by three Z symbols above it, suggesting sleep or rest.

    Better Wind Down at Night

    Falling asleep gets easier when your mind slows down first. Taken in the evening, L-Theanine supports the quiet that leads to natural, restful sleep, without leaving you groggy the next morning.‡

  • A black shield icon with a white outline features a stylized white brain, divided into two hemispheres, in the center. The brains outline is angular, resembling circuit lines.

    A Steadier Response to Busy Days

    Long days ask a lot of you. L-Theanine has been studied for its role in supporting a healthy stress response, so you have a more level starting point when the day gets full.‡

  • A black silhouette of a person sitting with arms raised, surrounded by angular shapes resembling stylized spikes or rays, all outlined in white.

    Wellness & Daily Health

    Foundational support for everyday mental resilience, mood balance and overall wellbeing.‡
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Make Calm Part of Your Daily Routine

Your Nervous System Needs Recovery Too

You can get your protein right, your sleep right, and your training right, and still be running on a stress response that never fully switches off. L-Theanine supports the calm side of that equation, so everything else you do has room to work.‡

Morning or Night, It Fits

Most relaxation ingredients only belong at bedtime. L-Theanine belongs wherever the day gets loud. Same capsule, different moment.‡

Better Rest, Better Performance

Improved relaxation and sleep quality help you recover smarter so you wake up ready to perform at your best.

Overall rating: 4.6875 / 5 from 16 reviews.

AI Generated Review Summary

Summary topics

Review topics: [supplement, shipping].

Review highlights

Reviews

Helps me sleep!

"L-theanine is a regular part of my sleep rountine. Love it."

— Robin M. (5/5)

Great product

"Great product great pricing and fast shipping"

— robert h. (5/5)

L-Theanine

"This Product was purchased for a Friend. I do not know anything. . . pretend for a moment I am Sargent Schultz - Colonel Hogan. . . I know nothing, nothing !"

— Clark E. (3/5)

Great stuff!

"Love this!"

— Wooten (5/5)

L-Theanine

"L-Theanine helps me to relax when I go to bed on a hard workout. It eases and relaxes my body. Great stuff."

— Castagna (5/5)

not so anxious

"Although it is hard to say definitively, I seem to be more relaxed throughout the day and I am much less anxious. I am going to continue taking L-Theanine daily and see how it goes."

— Timothy T. (4/5)

L-Theanine 200mg

"200 mg of L-theanine is a great supplement for relaxation. It also works well when paired with caffeine to give you a smooth energy boost without the jitters for people that are caffeine sensitive."

— John A. (5/5)

Night time

"Taking this at night as well. Seems to help me get to sleep faster"

— Crystal S. (5/5)

Calm

"Definitely gives you a calmness you can feel with some relief from anxiety"

— NELSON (5/5)

Not sure if I have

"Not sure if I have taken this long enough to see a difference."

— Daniel K. (3/5)

Q&A

Frequently Asked Questions

Will L-Theanine make me feel sleepy?

L-Theanine is commonly used to promote relaxation without drowsiness. Most people experience a calm, focused feeling rather than sedation, though individual responses can vary.

Can I take L-Theanine during the day?

Yes. L-Theanine is suitable for daytime use and is often taken during work, stressful situations, or anytime calm focus is needed.

Can L-Theanine be taken with caffeine or coffee?

Many people take L-Theanine alongside caffeine to support smoother focus and reduced jitters. If you are sensitive to caffeine, start with a lower amount.

How long does it take for L-Theanine to work?

Many users report noticing effects within 30 to 60 minutes, though timing can vary depending on the individual and whether it is taken with food.

Is L-Theanine safe for daily use?

L-Theanine is commonly used daily by many individuals. If you are pregnant, nursing, have a medical condition, or take medications, consult a healthcare professional before use.

Is L-Theanine the same as L-Threonine?

No. L-Theanine and L-Threonine are different amino acids with different functions. They are often confused due to similar spelling but are not interchangeable.