★★★★★
“Calm enough to stay focused.”
A verified buyer says one capsule fits naturally before long focus blocks and keeps the routine simple.
Marcie H.
Bettrbio
L-Theanine
Calm Focus · Mental Clarity
$19.99$24.9920% OFF
L-Theanine with a clear 200 mg dose for calm focus, mental clarity, stress support, and easier unwinding.
Exact amount shown3rd party testedBatch report available
Why L-Theanine?
A focused amino acid selected for a simple daily routine and a clearly disclosed 200 mg serving.
Ingredients & Supplement Facts
L-Theanine. One capsule provides 200 mg. 60 capsules and 60 servings per bottle.
How to Take
Take one capsule daily. Use it before focused work or make it part of an evening wind-down routine.
Testing, Shipping & Returns
Batch-specific testing, free shipping over $60, and a 60-day guarantee.
200 MG L-THEANINECALM FOCUS3RD-PARTY TESTEDNO PROPRIETARY BLENDS
REAL CUSTOMER STORIES
Daily essentials. Noticeable routines.
Choose a goal to view the most relevant experiences.
★★★★★
★★★★★
“Clearer when the day gets loud.”
A nurse says the clear dose supports mental clarity through demanding shifts and easier unwinding afterward.
Kylie M.
★★★★★
“The stress support feels easy to keep.”
A longtime customer keeps L-Theanine beside the desk and reaches for it before busy afternoons.
Matthew H.
A simple focus ritual, built to last
One capsule, one fully disclosed dose, and a routine that stays easy to repeat.
Add one capsule before a focused block or evening wind-down.
Consistent use makes calm focus and stress support easier to evaluate.
The daily L-Theanine routine becomes automatic.
Steady intake supports mental clarity and easier unwinding.
Keep the routine steady and verify every new batch.
THE FORMULA
One essential. Fully disclosed.
Every detail has a clear place in the formula.
PRODUCT STANDARD
A focused amino acid with proof behind it
We use a research-backed dose, independently test every batch, and publish the result so you know what you are paying for.
Form, elemental amount, and batch testing are fully disclosed.
BATCH-LEVEL
REPORT↗
REPORT↗
INDEPENDENT VERIFICATION
Three checks behind every batch
ID
Identity Confirmed
Ingredient VerificationConfirms the tested material is L-Theanine.
MG
Potency Verified
L-Theanine PotencyChecks the finished product against the labeled 200 mg amount.
QA
Contaminants Screened
Finished-Batch QualityScreens for heavy metals, microbes, and common contaminants.
How it works
Take One Capsule
One serving provides 200 mg L-Theanine.
Use Before Focus
Take before focused work or an evening wind-down.
Take It Daily
Consistency makes the routine easier to evaluate.
Verify Your Batch
Read the report tied to the finished product.
Your L-Theanine bottle includes
Everything needed for a clear daily routine.
- L-Theanine
Single-ingredient formula - 60 capsules
One capsule per serving - 60 servings
A complete 60-day supply - Batch testing record
Product-specific proof
More to look forward to as a subscriber
BETTRBIO MEMBER BENEFITS
20% Off Every Order
One essential with a clear purpose
Calm focus
Mental clarity
Stress support
Easier unwinding
Exact amount shown
Batch-specific testing
Supplement quality you can verify
FEATUREBETTRBIOGENERIC
THEANINEPROPRIETARY
BLEND
THEANINEPROPRIETARY
BLEND
Ingredient form shown●●Varies
Elemental amount shown●●Varies
200 mg dose●VariesVaries
Finished-batch report●——
No proprietary blend●●—
60-day guarantee●——
FOUR PRODUCT STANDARDS
Clear form, clear dose, clear proof
FORM
Focused L-Theanine Formula
A straightforward essential selected for an easy daily routine.
L-Theanine · Fully DisclosedDOSE
200 mg L-Theanine
The useful amount is printed clearly on the front of the routine.
One Capsule · One Daily ServingROUTINE
Gentle by Design
A simple capsule routine made for consistent daily use.
60 Capsules · 60 ServingsPROOF
Independently Tested
Finished-batch checks make the product standard visible.
Identity · Potency · ContaminantsFrequently asked questions
Find quick answers below.
Take one capsule daily before focused work or as part of a
consistent evening wind-down routine.
The front label and supplement facts disclose the exact 200 mg
amount, with no proprietary blend to decode.
Responses vary. Use it consistently and evaluate the routine over
the first few weeks rather than judging a single serving.
Supplements can interact with some medications. Ask your clinician
or pharmacist if you take prescriptions.
Subscribers can pause, skip, change, or cancel from their account.
Yes. Finished batches are checked for identity, potency, heavy metals, microbes, and common contaminants.
Use the batch number on your bottle to open its product-specific report.
One capsule provides one 200 mg serving of L-Theanine.
Each 60-capsule bottle contains 60 daily servings.
Yes. Choose a 30-, 60-, or 90-day cadence and change it from your account.
Your order is covered by a 60-day money-back guarantee.
Orders are prepared promptly and tracking is emailed as soon as the shipment leaves.
CUSTOMER EXPERIENCES
Recent verified feedback
4.7
★★★★★214 verified reviews
★★★★★ Easy evening routineVerified buyer
“One capsule, a clear dose, and no complicated stack. It is easy to keep beside my desk and remember.”
★★★★★ Exactly what I wantedVerified buyer
“I wanted L-Theanine with the amount disclosed clearly. The batch report made the choice simple.”
★★★★★ Clear and uncomplicatedVerified buyer
“The form and amount are right on the page. I do not have to decode a blend.”
★★★★★ Fits beside the bedVerified buyer
“It became part of the evening without changing everything else I do.”
★★★★★ The proof mattersVerified buyer
“Being able to open the report before buying made the difference for me.”
★★★★☆ Straightforward subscriptionVerified buyer
“The cadence is easy to change and the next bottle arrives before I run out.”