Theanine

Suggested Use

DIRECTIONS: Adults take 1-2 capsules a day; children over 8 years; 1 capsule a day; between meals; or as your health professional advises. Do not exceed recommended daily intake.

• 

  Higher Nature Theanine Capsules

  W-Wellness4.5(17)

  $28.00
• 

  Vitamatic L-Theanine 400mg 240 Tablets

  Target4.7(88)

  $16.99
• 

  Nature's Craft L-Theanine Organic Liquid Drops

  iHerb4.7(134)

  $15.99
• 

  L-Theanine

  Pure Prescriptions4.9(15)

  $30.99
• 

  L-Theanine 400mg Extra Strength Supplement

  eBay - kazanonline

  $29.03
• 

  Enzymatic Therapy L-Theanine 180 Veg Capsules

  Hy-Vee4.7(313)

  $15.99
• 

  L-THEANINE 200 capsules

  NutriKey4.8(27)

  $21.50
• 

  L-Theanine 250mg Relaxation Without Drowsiness Stress Support

  Nutridom

  $36.00

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.

• Manassas Nutrition Corner

  4.8 (82)

  Vitamin & supplements store

  9825 Liberia Ave Unit 105, Manassas, VA 20110

  Directions(571) 719-3321

• The Vitamin Shoppe

  4.5 (94)

  Vitamin & supplements store

  10944 Bulloch Dr, Manassas, VA 20109

  Directions(703) 392-6950

• Innovative Vitality Online

  5.0 (2)

  Vitamin & supplements store

  Historic District, 7730 Donegan Dr, Manassas, VA 20109

  Directions(703) 359-2842

• GNC

  4.1 (26)

  Vitamin & supplements store

  10778 Sudley Manor Dr, Manassas, VA 20109

  Directions(703) 331-5559

• 5 Star Nutrition Woodbridge

  4.9 (154)

  Vitamin & supplements store

  2816 Prince William Pkwy, Woodbridge, VA 22192

  Directions(571) 285-4153

• GNC

  4.3 (22)

  Vitamin & supplements store

  14111 St Germain Dr #16, Centreville, VA 20121

  Directions(703) 828-6000

• The Vitamin Shoppe

  4.2 (162)

  Vitamin & supplements store

  14065 Shoppers Best Way, Woodbridge, VA 22192

  Directions(703) 583-1479

• GNC

  3.9 (28)

  Vitamin & supplements store

  4143 Cheshire Station Plaza, Dale City, VA 22193

  Directions(703) 590-9840

• L-theanine: A potential multifaceted natural bioactive amide as health supplement

  R Adhikary, V Mandal - Asian Pacific Journal of Tropical Biomedicine, 2017 - Elsevier

  … , growth supplements or some other therapeutics. l-theanine is such a bioactive amide amino acid presented in different plants and fungi, especially in tea. Theanine has influential …

  201778 citations

• Green tea and theanine: health benefits

  R Cooper - International journal of food sciences and nutrition, 2012 - Taylor & Francis

  2012133 citations

• How does the tea L-theanine buffer stress and anxiety

  L Wang, M Brennan, S Li, H Zhao, KW Lange… - Food Science and …, 2022 - Elsevier

  … L-theanine, including … theanine in the food matrix has been further discussed in this review in relation to the physiological changes in the gastrointestinal tract and bindings of L-theanine …

  2022102 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

  20269 citations

• 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 benefits, … , in the form of orally administered nutritional supplements, on stress responses and anxiety …

  2020225 citations

• Improvement of both human and animal memory by synergy between fructooligosaccharide and L‐theanine function establishing a safe and effective food supplement

  Y Li, Y Jiang, Z Zhang, VIP Loake, X Bao… - Food science & …, 2024 - Wiley Online Library

  … of healthy adults after 1 month of consumption. Our results suggest that a combination of FOS and L-theanine … We show that this plant natural product regimen also improves human …

  202412 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2015-01-23. DSLD Label ID: 41342. 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.