L-Theanine 200 mgnone

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 Capsule(s) · 1 per day

Not Present

• 

  Nature Made Chewable L Theanine Tablets

  Walmart4.4(68)

  $12.74
• 

  the Vitamin Shoppe L-THEANINE 200 MG 120 EA

  Pepperdine Bookstore4.8(5)

  $41.99
• 

  Sports Research L-Theanine Suntheanine Softgels

  Vitacost.com4.7(1100)

  $20.97
• 

  Vital Nutrients L-Theanine 200 mg 60 Capsules

  Rehabmart.com4.7(51)

  $36.90
• 

  Dr aziz L-Theanine Supplement

  Dr Aziz Pharmacy

  $37.71
• 

  Nootropics Depot L-Theanine Capsules

  Nootropics Depot4.5(15)

  $15.99
• 

  Vitamatic L-Theanine 200mg Caffeine 100mg 120 Tablets

  Walmart - Vitamatic4.4(93)

  $9.99
• 

  L-Theanine 200

  Bock Nutritionals

  $52.99

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• Lifestyle Vitamins

  4.2 (10)

  Vitamin & Supplements Shop

  Enterprise Centre, Nutribrand, Pine Grove, Crowborough TN6 1DH

  Directions01825 817343

• Lamberts Healthcare Ltd

  3.9 (14)

  Health food shop

  Unit 1, 1 Lamberts Rd, Tunbridge Wells TN2 3EH

  Directions01892 554313

• Vitamin Shop

  5.0 (95)

  Vitamin & Supplements Shop

  2 Brewhouse Yard, Gravesend DA12 2EJ

  Directions01474 249413

• Vitaminnica Healthcare UK Limited

  4.5 (8)

  Vitamin & Supplements Shop

  3 Sittingbourne Rd, Maidstone ME14 5ES

  Directions020 8300 0296

• ITL Health

  5.0 (37)

  Vitamin & Supplements Shop

  50 Broadway, London SW1H 0BL

  Directions0118 321 7628

• Nature's Best Health Products Ltd

  4.2 (46)

  Health food shop

  1 Lamberts Rd, Tunbridge Wells TN2 3EH

  Directions01892 552117

• Vibrant Body & Mind

  5.0 (1)

  Vitamin & Supplements Shop

  19, Lake Court, Medway Dr, Tunbridge Wells TN1 2FH

  Directions01892 527017

• PHOENIX SUPPLEMENTS STORE

  5.0 (84)

  Vitamin & Supplements Shop

  2 Medway St, Maidstone ME14 1JS

  Directions01622 221530

• Safety and Efficacy of AlphaWave®l-Theanine Supplementation for 28 Days in Healthy Adults with Moderate Stress: A Randomized, Double-Blind, Placebo …

  M Moulin, DC Crowley, L Xiong, N Guthrie… - Neurology and …, 2024 - Springer

  … subsequent follow up, and out of range laboratory values and changes in vital signs were … that showed supplementation with l-theanine (200 mg/day) for four weeks in healthy adults …

  202427 citations

• Effects of L-theanine administration on stress-related symptoms and cognitive functions in healthy adults: a randomized controlled trial

  S Hidese, S Ogawa, M Ota, I Ishida, Z Yasukawa… - Nutrients, 2019 - mdpi.com

  … weeks L-theanine administration (200 mg/day, four weeks) in a … -A levels were measured at our laboratory using Salivary enzyme … or placebo administration are shown in Supplementary …

  2019365 citations

• The effect of oral supplementation of L-Theanine and Stress formula vitamin on the stress reduction

  W Mongkonsritragoon - 2015 - mfuir.mfu.ac.th

  … administration of L-Theanine has been has been proven in numerous medical reports like … of orally administered L-Theanine 200 mg or Stress formula vitamin (Stresstab 600 mg) on …

  2015

• … of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic …

  ER Payne, M Aceves-Martins, J Dubost… - Nutrition …, 2025 - academic.oup.com

  … to improve one’s health and well-being. Drinking black tea and supplementation with green tea … -free interventions, the median theanine dose was 200 mg (IQR, 100.45-212.5). Industry …

  202514 citations

• International society of sports nutrition position stand: energy drinks and energy shots

  AR Jagim, PS Harty, GM Tinsley… - Journal of the …, 2023 - Taylor & Francis

  … ), tyrosine, and L-theanine, with prevalence for each … American Medical Association recommends a limit of 500 mg∙… a group of six water-soluble vitamer compounds: pyridoxine, …

  2023163 citations

• Dietary Supplements and Nutraceuticals: A Textbook

  MS Sikarwar, A Muthuraman, SA Shaikh - 2026 - books.google.com

  … the antioxidant potential and healthcare applications of water-… fatty acids in maintaining physiological health. Additional chapters … , and real-world healthcare applications, making it both …

  2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2013-07-25. DSLD Label ID: 23755. 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.