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.

Serving Size: 2 MicroLingual(R) Tablet(s) · 1 per day

Not Present

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• TF Supplements Nutrition Superstore

  4.9 (283)

  Vitamin & supplements store

  20121 I-45, Spring, TX 77388

  Directions(832) 663-9252

• Nutrition Depot Louetta - Spring Nutrition Store

  4.5 (73)

  Vitamin & supplements store

  5407 Louetta Rd, Spring, TX 77379

  Directions(281) 320-8223

• GNC

  4.6 (70)

  Vitamin & supplements store

  4445 FM 1960 W, Houston, TX 77068

  Directions(281) 537-5210

• ATS Nutrition

  5.0 (117)

  Vitamin & supplements store

  7312 Louetta Rd B134, Spring, TX 77379

  Directions(346) 348-5628

• Champions Nutrition

  5.0 (101)

  Vitamin & supplements store

  8610 Louetta Rd, Spring, TX 77379

  Directions

• The Vitamin Shoppe

  4.2 (166)

  Vitamin & supplements store

  7504 FM 1960 W, Houston, TX 77070

  Directions(281) 955-5290

• Elev8 Nutrition & Supplements

  5.0 (7)

  Vitamin & supplements store

  16682 Champion Forest Dr, Spring, TX 77379

  Directions(832) 843-4288

• Betsy's Health Foods Inc

  4.7 (58)

  Vitamin & supplements store

  8220 Louetta Rd Ste. 136, Spring, TX 77379

  Directions(281) 440-9081

• 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 …

  202146 citations

• 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

  … appears to be a safe and effective way to support healthy … including 9 of the 11 that used a dose ≥200 mg/day (see Table 1 ). … in those receiving melatonin was superior to either of these …

  20269 citations

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

  MEACMD Lora, XDCCN Guthrie - 2021 - scienceopen.com

  … Four weeks of supplementation with 200 mg of L-theanine … administered a 200mg single dose of AlphaWave® L-Theanine, … long-term supplementation with AlphaWave® L-Theanine on …

  2021

• Performance-enhancing effects of caffeine and L-Theanine among Iranian elite wrestlers: a focus on cognitive and specific physical performance

  R Razazan, M Hemmatinafar, B Imanian… - Journal of the …, 2025 - Taylor & Francis

  … study, healthy adult participants (n = 48) received 250 mg of caffeine (~3.5 mg/kg), 200 mg of L-theanine (~3 mg/… that co-supplementation with moderate doses of caffeine (3 mg/kg) and …

  20257 citations

• L-Theanine for Sleep: How It Works and What Studies Show

  WMI Best, G vs L-Threonate - smartersupplementreviews.com

  … evening), but no evidence suggests this is superior to a … years working in the supplement industry, L-theanine is one of … , consult a healthcare provider before adding L-theanine. If sleep …

• The effects of L-theanine supplementation on the outcomes of patients with mental disorders: a systematic review

  R Moshfeghinia, E Sanaei, S Mostafavi, K Assadian… - BMC psychiatry, 2024 - Springer

  … the effects of LT supplementation on the outcomes of patients with mental health disorders. The … LT dosages varied, including 400 mg/day (200 mg × 2 times/day) in two studies added to …

  202423 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2020-01-25. DSLD Label ID: 212697. 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.