L-Theanine 200 mg

• 

  Bluebonnet Nutrition Bluebonnet L-Theanine 200 mg

  Walmart - Bluebonnet Nutrition4.0(4)

  $19.96
• 

  BlueBonnet Nutrition L-Theanine 200 mg, 30 Count (Pack of 2)

  Optimist4.0(4)

  $10.21
• 

  Bluebonnet Nutrition, L-Theanine

  Mercato.com

  $12.99
• 

  Bluebonnet Nutrition Bluebonnet Targeted Choice Stress Relief

  Walmart - Bluebonnet Nutrition5.0(3)

  $35.16
• 

  Blue Bonnet Power Thought Supplement

  Instacart5.0(5)

  $21.69
• 

  L-THEANINE 200 capsules

  NutriKey4.8(27)

  $21.50
• 

  Dr aziz L-Theanine Supplement

  Dr Aziz Pharmacy

  $37.71
• 

  Bluebonnet Nutrition Bluebonnet Targeted Choice Sleep Support

  Walmart3.8(6)

  $27.16

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.

• Mother Earth Vitamins and More

  4.8 (46)

  Vitamin & supplements store

  5158 Pleasant Ave, Fairfield, OH 45014

  Directions(513) 894-1131

• GNC

  4.8 (85)

  Vitamin & supplements store

  9850 Colerain Ave, Cincinnati, OH 45251

  Directions(513) 741-9200

• Spring Street Vitamins

  4.8 (31)

  Vitamin & supplements store

  3316 Princeton Rd, Fairfield, OH 45011

  Directions(513) 737-4053

• The Vitamin Shoppe

  4.4 (156)

  Vitamin & supplements store

  5 E Kemper Rd, Cincinnati, OH 45246

  Directions(513) 671-0021

• G & Shirleys Vitamin & Herb Shop Inc

  4.5 (11)

  Vitamin & supplements store

  5844 Hamilton Ave, Cincinnati, OH 45224

  Directions(513) 648-0600

• Complete Nutrition

  4.6 (5)

  Vitamin & supplements store

  10895 Reading Rd, Cincinnati, OH 45241

  Directions(513) 733-1414

• GNC

  3.8 (24)

  Vitamin & supplements store

  1452 Main St, Hamilton, OH 45013

  Directions(513) 737-0990

• The Vitamin Shoppe

  4.6 (115)

  Vitamin & supplements store

  3831 Edwards Rd Ste 500, Cincinnati, OH 45209

  Directions(513) 351-1376

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

  J Cotter, CE Caddick, JL Harper… - Nutritional …, 2026 - 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 …

  20269 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 …

  202529 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. …

  202525 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 …

  202145 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 …

  202423 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: 203845. 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.