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L-Theanine

4.7 3 reviews

$32.00 90 ct

$0.178 per 100 mg of l-theanine

200 mg L-theanine per capsule. One amino acid, nothing else.

  • Single amino acid, no blend
  • 200 mg per capsule
  • 90 capsules per bottle
  • No proprietary blend — one compound only
Choose your pack
What exactly is in it
L-THEANINE, at 200 mg per capsule. 90 per bottle. Nothing added for volume, colour or flavour, and no second active behind a trademarked name.
How to take it
Take 1 capsule daily with food, or as directed by your healthcare professional.
What it works out to
$0.178 per 100 mg of l-theanine, or 18.0 g of compound in the bottle. That figure is the one to compare against another brand’s l-theanine — it cannot be calculated at all for a proprietary blend, because a blend prints one total for several ingredients.
Standards and testing
Made in the USA in a cGMP-registered facility. Independent testing begins with Lot 001 — no lot has been produced yet, so there is no certificate to show you, and we will not imply otherwise. When it exists it will be linked from this page and findable by the lot code on the bottle.
When you can order
Not yet. The buy button is a notify form because nothing can ship and we are not taking card payments until it can. Leave an email and you will hear the day stock lands.
  • Secure checkout
  • No card until it ships
  • Dose on the front panel

What’s inside

One dose, taken apart.

Most supplements hide their actives inside a proprietary blend. This bottle has four facts in it — and they are all on the label.

RC-03 · 90 ct
The compound L-theanine The single active. No blend to hide inside.
The per capsule dose 200 mg per capsule Printed on the front panel, not a range.
The form Capsule Nothing added for volume or colour.
The proof Nothing else No flow agents, no bulking agents, no colour, no flavour.

The panel

Supplement Facts, in full.

Not a summary and not a graphic. The panel as it is printed, with one active, its amount per serving, and an explicit line for everything else.

  • 90 servings per container
  • 200 MG of l-theanine per serving
  • 0 other ingredients
Supplement Facts

Serving Size 1 capsule

Servings Per Container 90

Amount Per Serving % Daily Value
L-THEANINE 200 MG

Other ingredients: none.

† Daily Value not established.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

What’s in the bottle

One compound, declared.

Each capsule delivers 200 mg of L-theanine, an amino acid found in tea leaves. One ingredient in the bottle and nothing else.

Shown at right: the front panel, as printed on the current lot.

The difference

Why Cofactor Supply is different

Cofactor Supply Typical blend
One compound per bottle
Exact dose on the front panel
Proprietary blends
Cost per mg of active is computable No
Filler amounts you can't audit
You control what you combine

How to use it

Three things, then forget about it.

  1. 01

    Take it

    Take 1 capsule daily with food, or as directed by your healthcare professional.

  2. 02

    Keep it simple

    One compound at a time means one variable at a time. Change one thing and you can tell what did it.

  3. 03

    Store it right

    Somewhere cool and dry, out of direct light. Leave the desiccant in the bottle and keep the cap closed.

What we can and can’t tell you

The arithmetic is certain. The timeline isn’t.

What the label lets us calculate

Serving
1 per day
Bottle lasts
90 days
Cost per day
$0.36
Cost per 100 mg
$0.178
Compound in the bottle
18.0 g

What we won’t put a number on

When you will notice something, and whether you will at all.

We have not run a trial on this product. Published research is on the compound, in a particular population, at a particular dose — not on this bottle and not on you. Anyone printing “feel it in seven days” without a study behind it is guessing, and we would rather be the brand that says so.

If nothing changes, that is a real result too: it means this wasn’t your limiting factor. One bottle is a cheap way to find that out.

The full list

Other ingredients: none.

Not a shortened list. The whole list. One active compound, the capsule that holds it, and nothing added for volume, colour or flavour.

We don’t flavour anything, because flavouring is fillers you didn’t ask for.

Ingredients
Active
L-THEANINE · 200 MG
Carrier
CAPSULE
Other ingredients
None
  • Flow agents
  • Bulking agents
  • Colour
  • Flavouring
  • Sweeteners
  • Proprietary blend

Reviews

What people who bought it say.

4.7/5

3 reviews

5 2
4 1
3 0
2 0
1 0
Write a review
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Not published. Used to confirm your order.

Perfectly good. I would like to see a smaller trial size for a first order, but no issue with the product itself.

Nadia Freeman Verified buyer

The count and the dose are both on the front, which is the only reason I could compare it against what I was already taking.

Henrik Vasquez Verified buyer

One compound at a stated dose, which is all I wanted. Capsules are easy to take and there is no taste to speak of.

Beatriz Salgado Verified buyer

Questions

Frequently asked

Common questions about L-Theanine

What does single-ingredient actually mean?

One active compound per bottle, at one dose, printed on the front panel. No proprietary blends, no undisclosed filler amounts, no second active hiding behind a trademarked name.

Do you publish test results?

Not yet. No lot has been produced, so there is nothing to test. Independent testing begins with Lot 001, and each lot's certificate will be linked from its product page and findable by the lot code printed on the bottle. Until then, everything we claim is printed on the front panel and can be checked by reading it.

Why is the dose on the front of the label?

Because it is the number that decides whether a product does anything. Putting it on the front removes the choice to bury it.

When can I actually order?

Not yet. Lot 001 has not been produced, so nothing can ship and we are not taking card payments — that is why the buy button is a notify form. Leave an email and you will hear from us the day stock lands, with the shipping timetable at that point.

Start here

Read the label. Then decide.

One compound, one declared dose. Everything you need to judge it is printed on the front.