L-Theanine 200 mg®

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 1 Vegecap(s) · 1 per day

Not Present

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• Double - S - Nutrition

  4.8 (69)

  Vitamin & supplements store

  Arcaden Passage, Vilbeler Straße 27, 60313 Frankfurt am Main

  Directions069 21932733

• BioTechUSA

  4.1 (78)

  Vitamin & supplements store

  Zeil 106, 60313 Frankfurt am Main

  Directions069 92884617

• Body Attack

  4.8 (217)

  Vitamin & supplements store

  Limescorso 8, 60439 Frankfurt-Nord-West

  Directions069 95159917

• Wob Nutrition Onlineshop Lagerverkauf Lieferung

  4.8 (44)

  Vitamin & supplements store

  Rödelheimer Landstraße 42, 60487 Frankfurt am Main-Innenstadt II

  Directions0177 6850222

• FitGS

  3.0 (2)

  Vitamin & supplements store

  Thurn-und-Taxis-Platz 6, 60313 Frankfurt am Main

  Directions

• Probio Naturprodukte Handelsgesellschaft mbH

  4.9 (17)

  Vitamin & supplements store

  Thurn-und-Taxis-Platz 6, 60313 Frankfurt am Main

  Directions069 257375248

• Vitasunn.com

  5.0 (1)

  Vitamin & supplements store

  Eschersheimer Landstraße 42, 60322 Frankfurt am Main-Innenstadt III

  Directions+44 800 043 0447

• WORLD OF BODY GmbH

  4.9 (139)

  Vitamin & supplements store

  Rödelheimer Landstraße 42, 60487 Frankfurt am Main-Innenstadt II

  Directions0177 6850222

• L-theanine as a functional food additive: Its role in disease prevention and health promotion

  J Williams, J Kellett, PD Roach, A McKune… - 2016 - openresearch.newcastle.edu.au

  … More recently, L-THE (200 mg) was administered in the form of a beverage to 36 healthy … on blood pressure of chocolate containing L-THE (50–200 mg per serve of chocolate) [98]. This …

  201678 citations

• The effects of green tea amino acid L-theanine consumption on the ability to manage stress and anxiety levels: a systematic review

  JL Williams, JM Everett, NM D'Cunha, D Sergi… - … foods for human nutrition, 2020 - Springer

  … acid, L-theanine (L-THE) is associated with several health … form of orally administered nutritional supplements, on stress … Our findings suggest that supplementation of 200–400 mg/day …

  2020221 citations

• L-theanine—a unique amino acid of green tea and its relaxation effect in humans

  LR Juneja, DC Chu, T Okubo, Y Nagato… - Trends in Food Science & …, 1999 - Elsevier

  … (50–200 mg), signifying relaxation without causing drowsiness. With the successful industrial … of L-theanine, we are now able to supply Suntheanine™ (trade name of L-theanine) which …

  1999727 citations

• Anti-stress, behavioural and magnetoencephalography effects of an L-theanine-based nutrient drink: a randomised, double-blind, placebo-controlled …

  DJ White, S De Klerk, W Woods, S Gondalia, C Noonan… - Nutrients, 2016 - mdpi.com

  … [21] reported significantly reduced subjective stress and anxiety response to a cognitive stressor after receiving 200 mg of l-theanine compared to placebo. This reduction in subjective …

  2016180 citations

• Cognitive and affective effects of L-Theanine: a systematic review and meta-analysis of 31 randomized trials

  C Gerolymos, E Saddier, L Boyer, G Fond - Molecular Psychiatry, 2026 - nature.com

  … oral dose of L-theanine on stress in healthy adults. Secondary … daily administration in healthy participants; anxiety after a single … , single-dose L-theanine (mostly 200 mg) significantly …

  2026

• Green tea and theanine: health benefits

  R Cooper - International journal of food sciences and nutrition, 2012 - Taylor & Francis

  … of L-theanine and 200 mg of a decaffeinated catechin green tea extract providing polyphenols, catechins, EGCG and trace amounts of caffeine, approximately 10 cups of decaffeinated …

  2012134 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2022-07-21. DSLD Label ID: 268166. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.