What’s inside this formula?
Pure’s L-Theanine is listed here in the theanine collection. This article looks at the selected 365 Capsule(s) · U.S. label record pack, then puts its ingredients into context.
L-Theanine: 355 mg per 1 Capsule(s). U.S. label record entered 2021-06-23; retrieved 2026-11-05. Current formula and stock are unconfirmed.
Check the original label ↗L-theanine is an amino acid found in tea and also sold as a separate supplement. Small human trials have examined stress-related symptoms and aspects of sleep. Tea, isolated theanine and theanine combined with caffeine are different interventions, so the complete formula matters when interpreting research or deciding what effect to expect.
Theanine across brands
Read the complete category guide for potential benefits, evidence limits, forms, label amounts, cautions and value comparisons.
Read the Theanine guide ↗The pack details above come from the dated NIH DSLD record, not a fresh manufacturer or retailer check. Ingredient research below does not establish the effects of this exact product or independently verify its contents.
Amounts, ingredients and precautions
NIH Dietary Supplement Label Database record 248696. Entered 2021-06-23; retrieved 2026-11-05. This is a U.S. label reference, not confirmation of the current formula, stock or availability in another country. Database inclusion is not NIH approval or independent testing.
Recorded serving: 1 Capsule(s). Servings per container: 365. Amounts below retain their own serving basis; they are not personal dose instructions. Indented rows are components and should not be added again to their parent total.
| Ingredient / nutrient | Amount | Per |
|---|---|---|
| L-Theanine | 355 mg | 1 Capsule(s) |
Other ingredients recorded
Gelatin Capsules
Recorded label precautions
- Pregnant or Nursing or Prescription Medications: If you are pregnant, nursing, or taking medication, consult your physician before taking this or any dietary supplement.
- All Other: For adults only.
Open the original NIH DSLD label record ↗. Data: NIH Office of Dietary Supplements, DSLD, CC0 1.0. Read the current packaging before use.
The quantities in this record
L-Theanine 355 mg per 1 Capsule(s). The full table preserves individual serving bases; nested components are not additional amounts to add to their parent blend totals. No quantities have been inferred from a suggested usage range.
What accompanies the main ingredients
Gelatin Capsules These are recorded label details, not an independent test of composition or cross-contact.
Match the selected label and market
This profile describes Pure L-Theanine, 365 Capsule(s), in the U.S. label database. Entry date: 2021-06-23; record retrieved: 2026-11-05. DSLD lists this record as on-market, but that does not establish present stock, a current formula or availability in another country. Different packs and markets may differ.
Label evidence and its limits
This capsule record documents the selected Pure L-Theanine label, not a laboratory result. A source database entry, named ingredient or label claim does not establish purity, clinical benefit or suitability for you. No independent composition test or exact-formula clinical trial was verified. Read the full formula and compare the same source market, physical form and serving basis before interpreting another version as equivalent.
Whole-formula checks before comparing
The recorded formula includes Gelatin. This label-based information does not establish vegetarian or vegan suitability; it is not certification or an allergy guarantee. Recorded precautions: If you are pregnant, nursing, or taking medication, consult your physician before taking this or any dietary supplement. For adults only. These label quantities are not personal dosing advice. Medicines, pregnancy, breastfeeding, kidney disease or an individual nutrition restriction require advice from a qualified healthcare professional.
Where might it be useful?
Possible stress-related effects
A small randomized study reported improvement in some stress-related measures after short-term L-theanine use.
Possible sleep-related effects
The same research explored sleep measures, providing preliminary findings rather than a guaranteed sleep benefit.
What the research can — and cannot — tell us
The cited trial was small and short, with results that need replication in broader populations. It does not establish treatment of anxiety disorders or chronic insomnia. Effects of a specific theanine preparation should not be assumed for every capsule, blend or drink, particularly when caffeine is added.
What deserves your attention?
Compare each declared amount with its own serving basis. Read the full recorded precautions below and verify the current pack before use. No personal dose or suitability is inferred.
Suitability comes before strength
Check blends for caffeine and other sleep or mood ingredients. Discuss persistent insomnia, anxiety, pregnancy or medicine use with a clinician. Avoid assuming that a supplement will be effective or appropriate simply because the ingredient occurs in tea.
Dietary details for this product
Animal-derived The recorded formula includes Gelatin. This label-based information does not establish vegetarian or vegan suitability; it is not certification or an allergy guarantee.
A dietary label and an allergy assessment answer different questions. Check every ingredient, the capsule or softgel materials and the allergen statement on the pack you receive. If you take medicines, have a health condition, are pregnant or are choosing for a child, discuss the full formula with a qualified clinician.
Make the comparison meaningful.
- Match the exact version.Look for Pure · L-Theanine and the 365 Capsule(s) · U.S. label record pack. A similar name or bottle can contain a different strength, blend or serving.
- Compare like with like.Read the serving size alongside the active ingredient amount. Capsule count, compound weight and total blend weight can describe different things. Use the label notes above to see what matters for this formula.
- Check the seller and final cost.Review seller identity, expiry, batch details and any Indian import information. Compare the final delivered price only after matching the formula. Prices and stock are checked on the retailer’s site.
Keep the label beside the decision.
Open the complete product profile for its source, dietary notes and available shopping destination.
Is this an endorsement or a medical recommendation?
No. This is an editorial guide to a selected product and its ingredient context. We have not independently tested this bottle or established a clinical benefit for this exact formula. A product’s inclusion is not a recommendation that everyone should take it.
Does Proof & Price earn from shopping links?
Some product-profile links are paid links and are labelled. As an Amazon Associate we earn from qualifying purchases. Manufacturer source links are provided for checking the label. Read our affiliate disclosure.
Read, check, decide.
Product label reviewed 2026-11-05. Ingredient context reviewed 2026-10-26. This article has not received independent clinical review. Packaging and formulas can change; the current pack takes precedence.
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