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 Capsule(s) · 1 per day

Not Present

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  Bluebonnet l- theanine在线出售-30叶胶囊,200毫克

  DailyVita4.0(4)

  $12.76
• 

  Bluebonnet Nutrition Bluebonnet L-Theanine 200 mg

  Village Green Apothecary4.0(4)

  $19.96
• 

  the Vitamin Shoppe L-THEANINE 200 MG 120 EA

  Pepperdine Bookstore4.8(5)

  $41.99
• 

  Bluebonnet Targeted Choice Sleep Support

  Walmart - Bluebonnet Nutrition4.5(4)

  $14.36
• 

  Bluebonnet Simply Calm Powder Raspberry Lemon

  Instacart4.8(12)

  $19.79
• 

  Nootropics Depot L-Theanine Capsules

  Nootropics Depot4.5(15)

  $15.99
• 

  Bluebonnet L-Theanine 150 mg

  Mercato.com3.7(3)

  $14.67
• 

  Dr aziz L-Theanine Supplement

  Dr Aziz Pharmacy

  $37.71

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.

• Nutrition Depot

  5.0 (112)

  Vitamin & supplements store

  2005 Southwest Fwy, Houston, TX 77098

  Directions(346) 516-0878

• Willner Chemists

  4.7 (146)

  Vitamin & supplements store

  100 Park Ave, New York, NY 10017

  Directions(800) 633-1106

• Supplement Warehouse

  4.7 (229)

  Vitamin & supplements store

  181 W Crossroads Pkwy Ste F, Bolingbrook, IL 60440

  Directions(630) 965-8526

• Supplement Superstore

  5.0 (1389)

  Vitamin & supplements store

  8420 Eager Rd, St. Louis, MO 63144

  Directions(314) 961-3935

• Hundred

  4.3 (41)

  Vitamin & supplements store

  50 S Center St Ste 3, City of Orange, NJ 07050

  Directions(347) 949-0230

• Lindberg Nutrition

  4.6 (146)

  Vitamin & supplements store

  3804 Sepulveda Blvd, Torrance, CA 90505

  Directions(310) 378-9490

• GNC

  4.4 (92)

  Vitamin & supplements store

  753 Broadway Spc 753, New York, NY 10003

  Directions(212) 380-5999

• GNC

  4.7 (202)

  Vitamin & supplements store

  2 Pennsylvania Plaza Ste 29B, New York, NY 10121

  Directions(212) 239-1251

• Examining the effect of L-theanine on sleep: a systematic review of dietary supplementation trials

  J Cotter, CE Caddick, JL Harper… - Nutritional …, 2025 - Taylor & Francis

  … , supplementation with 200–450 mg/day of L-theanine appears to be a safe and effective way to support healthy … 9 of the 11 that used a dose ≥200 mg/day (see Table 1 ). Improvements …

  20259 citations

• The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis

  A Bulman, NM D'Cunha, W Marx, M Turner… - Sleep medicine …, 2025 - Elsevier

  … in the management of sleep disturbances; however, the lack of studies on “pure” L-theanine … of L-theanine supplementation for improving and maintaining sleep quality in healthy and …

  202535 citations

• l-theanine: From tea leaf to trending supplement–does the science match the hype for brain health and relaxation?

  R Dashwood, F Visioli - Nutrition Research, 2025 - Elsevier

  … of this nutraceutical supplement marketed for brain health and … in the use of l-theanine supplements at pharmacologic doses … this trending supplement for brain health and relaxation. …

  202526 citations

• A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of AlphaWave®l-Theanine on Stress in a Healthy Adult …

  M Evans, AC McDonald, L Xiong, DC Crowley… - Neurology and …, 2021 - Springer

  … , participants were administered a 200 mg single dose of AlphaWave ® l-Theanine, and the … Therefore, future research is warranted in long-term supplementation with l-theanine in the …

  202149 citations

• 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

  … study that showed supplementation with l-theanine (200 mg/day) for four weeks in healthy adults significantly … Moreover, l-theanine supplementation (400 mg/day) for 17 days in …

  202427 citations

• Getting a Head Start

  K Chiarello-Ebner - wholefoodsmagazine.com

  … , director of R&D and national educator at Bluebonnet Nutrition Corporation, Sugar Land, TX… that several supplements (like 5-HTP, L-tryptophan, St. John’s Wort, SAMe, L-theanine and …

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2019-06-24. DSLD Label ID: 203818. 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.