L-Theanine With Suntheanine 150 mg

Suggested Use

Suggested Adult Use: Take 1 capsule daily without food; or as recommended by a nutritionally-informed physician.

• 

  Doctor's Best Suntheanine L-Theanine 150 mg 90 Veggie CapsDoctor's Best Suntheanine L-Theanine 150 mg 90 Veggie Caps

  iHerbFree delivery on $25+Free delivery on $25+

  $22.99Lowest
• 

  Doctor's Best Suntheanine L-Theanine Vegetable CapsulesDoctor's Best Suntheanine L-Theanine Vegetable Capsules

  Texim OneFree delivery on $100+Free delivery on $100+

  $26.99
• 

  Doctor's Best L-Theanine AlphaWave Veggie CapsDoctor's Best L-Theanine AlphaWave Veggie Caps

  superbhb.co.ukFree deliveryFree delivery

  $26.77
• 

  BestVite L-Theanine 200mg with SuntheanineBestVite L-Theanine 200mg with Suntheanine

  BestviteFree deliveryFree delivery

  $32.99
• 

  Theanine (as Suntheanine) 60 CapsulesTheanine (as Suntheanine) 60 Capsules

  Nutriessential.comFree delivery on $75+Free delivery on $75+

  $37.80

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

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• GNC

  4.5 (128)

  Vitamin & supplements store

  432 86th St, Brooklyn, NY 11209

  Directions(718) 680-0901

• The Vitamin Shoppe

  4.3 (142)

  Vitamin & supplements store

  1326 Kings Hwy, Brooklyn, NY 11229

  Directions(718) 382-2535

• 4life Brooklyn

  5.0 (5)

  Vitamin & supplements store

  New Utrecht Ave, Brooklyn, NY 11219

  Directions(347) 825-1330

• Natural Body Bay Ridge

  5.0 (37)

  Vitamin & supplements store

  8806 4th Ave, Brooklyn, NY 11209

  Directions(347) 578-7764

• The Vitamin Shoppe

  4.5 (61)

  Vitamin & supplements store

  480 86th St, Brooklyn, NY 11209

  Directions(718) 491-9768

• GNC

  4.5 (53)

  Vitamin & supplements store

  2155 A Ralph Ave, Brooklyn, NY 11234

  Directions(347) 875-4578

• GNC

  4.2 (115)

  Vitamin & supplements store

  5301 5th Ave, Brooklyn, NY 11220

  Directions(718) 439-7954

• The Vitamin Shoppe

  4.4 (122)

  Vitamin & supplements store

  8929 Avenue D C1, Brooklyn, NY 11236

  Directions(718) 629-2076

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

  J Williams, J Kellett, P Roach, A McKune… - …, 2016 - pureportal.coventry.ac.uk

  … THE as a supplement as well as a functional food ingredient for its therapeutic health benefits, … Lyon, MR; Kapoor, MP; Juneja, LR The effects of L-theanine (suntheanine(r)) on objective …

  201677 citations

• Keyora Research Notes Series (L-Theanine Episode 10): Mapping L-Theanine to Your Neurobiology-Safety, Dosage, and Functional Timing Protocols

  J Xu - Keyora Nutritional Neurology, 2025 - academia.edu

  … , addresses the critical practicalities of L-Theanine supplementation, challenging the notion … of L-theanine (Suntheanine â ) on attention and reaction time response in 18 normal healthy …

  2025

• 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… - Plant foods for human …, 2020 - Springer

  … The green tea amino acid, L-theanine (L-THE) is associated with several health … as a supplement was compared to a control. Our findings suggest that supplementation of 200–400 mg/…

  2020225 citations

• L-theanine: a prospective natural medicine

  S Chatterjee, A Chatterjee… - International journal of …, 2016 - researchgate.net

  … information of L- theanine with reference to health benefits. … and toxicity of L-theanine (Suntheanine) where L-theanine was … a dietary supplement, and according to FDA L-theanine can …

  201618 citations

• Dose–response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study

  TL Dassanayake, D Wijesundara… - Nutritional …, 2023 - Taylor & Francis

  … -way crossover study in 32 healthy young adults, where we … those who use L-theanine as a nutritional supplement is yet to … Determination of the GRAS status of suntheanine L-theanine …

  202316 citations

• The Effect of Tea and its Constituent L-Theanine on Anxiety: A Review of the Literature

  C Gilbert - 2014 - digitalcommons.calpoly.edu

  … Due to anxiety’s high prevalence and health consequences, more clinical trials using … 50 or 200 mg of Suntheanine, a commercial product for L-theanine. Suntheanine was prepared by …

  20142 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2017-12-22. DSLD Label ID: 81908. 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.