NOW L-Theanine 200mg.

The gap this formula speaks to.

Public health figures the engine matched to this formula's ingredients. Reported by their source, cited and dated, never written by the brand.

Population figures from public health data. Context for the category, not a statement about any individual and not a claim about this product.

Every one of these is a fact the engine could ground.

Each line below was derived from this formula's own record at the time of verification. Nothing here was written by the brand, and nothing can be added that the evidence does not carry.

• Studied in people19 human studies on Inositol back this formula, each one cited.
• A mechanism that is settledHow L-Theanine and Inositol work is settled pharmacology.
• Recent work on the recordThe most recent study on this record was published in 2025.
• Serving amount inside the studied rangeEach serving carries 200 mg of L-Theanine, inside the range the published research used.
• A stated daily maintenance amountL-Theanine is here at a daily maintenance amount, which is what a daily supplement is for.
• Why this formatIt is a capsule, so the amount per serving is fixed and travels without measuring.
• The exact form, describedThe label names its forms exactly: L-theanine, Myo-inositol. The record says what each one is and what it suits.
• Full label disclosureEvery ingredient on this label carries its own declared amount.
• Where it comes from and how it is madeL-Theanine is made by more than one route.
• Positions this formula already qualifies forThis formula already qualifies for positions beyond the one it is sold into, on the evidence it carries.
• A position nobody is holding yetSome of those positions are ones almost nobody is selling to yet.

What the trials show about timing.

Time-to-effect windows the engine read from the trial record. Each is a window a named study measured, cited and dated, never written by the brand.

• L-Theaninewithin about 45 to 50 minutes of a single doseMeasured within a day

  Two double-blind placebo-controlled crossover trials measured attention at a fixed interval after one oral dose. In 24 overnight sleep-deprived adults aged 20 to 25, a 200 mg dose tested 45 minutes post-dose reduced false alarms on a traffic-scene recognition task and raised target-distractor discriminability. In 27 healthy young adults tested 50 minutes post-dose, 400 mg shortened the parietal P3b event-related potential latency against placebo, with no significant change at 100 or 200 mg. Both trials measured task and electrophysiological markers, not a subjective feeling.

  Karunaratne and Dassanayake, 2024PMID 39052627

  Dassanayake et al., 2020PMID 32777998

  Promising
• Inositolabout 20 to 22 weeks of daily useBuilds with daily use

  In a randomised controlled pilot trial, pregnant women taking 2 g myo-inositol with folic acid twice daily showed lower serum asprosin and a lower HOMA-IR index, a marker of insulin sensitivity, after 20 to 22 weeks of supplementation, while the folic acid only group did not.

  Özay et al., 2025 (Journal of pregnancy)PMID 41497562

  Early

Windows measured in the cited trials. Context for how the active behaves over time, not a statement about any individual and not a claim about this product.

How each ingredient usually behaves over time.

Two ingredients, from each one's own page.

• L-TheanineThirty to sixty minutes

  For most people, with blood levels peaking inside the first hour. Nothing accumulates, so each dose stands on its own.

  Its own page, the plain answer on timing ↗

• InositolTwo to four weeks

  For mood steadiness. Cycle-related change takes two to three months, because a cycle is the unit it gets measured in.

  Its own page, the plain answer on timing ↗

How each ingredient usually behaves over time, from its own page on IngredientMD. General timing for the ingredient, not a measurement of this product.

The same ingredient, carried differently.

What each form is, and where it fits in a formula. Measured findings carry the study that reported them.

• L-theanine

  The single L-enantiomer as a free amino acid, the form found in tea leaf and the form used in essentially all human trials.

  Fits

  Anyone matching what the trial literature actually tested, and anyone formulating with caffeine.

  Trade-off

  Hygroscopic powder with a faint umami taste that can come through in unflavoured drink mixes.

• Myo-inositol

  The most common naturally occurring stereoisomer of inositol, a six-carbon sugar alcohol (cyclohexanehexol). It is the form found in most foods and in the body's own inositol pool, and is supplied as a free white crystalline powder.

  Fits

  It dissolves readily in water with a mild sweet taste, so it suits high-gram powders, stick packs and drink mixes where a large scoop needs to go into solution cleanly. It is also the form the bulk of inositol research has used.

  Trade-off

  Doses are counted in grams rather than milligrams, so it adds noticeable bulk to a capsule line and usually pushes a product toward a powder or several capsules per serving.

Descriptions of the form itself, read from the cited studies. Not a comparison between products and not a statement about any individual.

Capsule

It is a capsule, so the amount per serving is fixed and travels without measuring.