Theanine 200 mg

Suggested Use

Usage: Take 1 capsule per day with water or juice on an empty stomach or as directed by your qualified healthcare professional.

• 

  Jarrow Formulas Theanine 200 mg. 60 Capsules

  superbhb.co.uk4.8(1000)

  $35.29
• 

  Jarrow Formulas Jarrow Theanine 200 mg 60 Caps

  Eddie's Health Shoppe4.8(1000)

  $24.99
• 

  Jarrow Formulas Theanine 100 mg 60 Capsules

  Target4.8(989)

  $19.48
• 

  JARROWS Jarrow Formulas Theanine 200 mg L-Theanine for relaxation and Wellbeing

  GoSupps.com4.8(1000)

  $89.99
• 

  Jarrow Formulas Theanine 200mg High Dosed 60 Vegan Capsules

  GoSupps.com4.8(1000)

  $79.99
• 

  Jarrow Formulas Theanine 100mg Apple Flavor 60 Gummies

  The Vitamin Shoppe4.8(26)

  $26.99
• 

  Jarrow Formulas GABA Soothe Capsules

  iHerb4.7(238)

  $22.01
• 

  L-THEANINE 200 capsules

  NutriKey4.8(27)

  $21.50

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.

• GNC

  4.5 (75)

  Vitamin & supplements store

  9300 S I-35 Frontage Rd Ste C - 300, Austin, TX 78748

  Directions(512) 292-9404

• The Vitamin Shoppe

  4.3 (120)

  Vitamin & supplements store

  5400 Brodie Ln #1100, Austin, TX 78745

  Directions(512) 891-0748

• OMNILIFE CEDIS AUSTIN

  4.6 (39)

  Vitamin & supplements store

  500 E Ben White Blvd Suite 400, Austin, TX 78704

  Directions(512) 326-1575

• GNC

  3.1 (39)

  Vitamin & supplements store

  5601 Brodie Ln Ste 920, Austin, TX 78745

  Directions(512) 892-0938

• GNC

  3.8 (50)

  Vitamin & supplements store

  4410 E Riverside Dr #230, Austin, TX 78741

  Directions(512) 385-3816

• Buena Vida Nutrition

  5.0 (1)

  Health food store

  719 W William Cannon Dr #106, Austin, TX 78745

  Directions(512) 888-6348

• Rock's Discount Vitamins - Austin

  4.7 (170)

  Vitamin & supplements store

  4404 W William Cannon Dr, Austin, TX 78749

  Directions(512) 432-5376

• BioID Nutrition

  5.0 (1)

  Vitamin & supplements store

  2110 W Slaughter Ln #107, Austin, TX 78748

  Directions

• L-Theanine Nootropic Review: Benefits, Side Effects & Dosage

  HMDLT Cost - nootropicology.com

  … health food stores, online retailers, and supplement shops. Reputable brands like NOW Foods, Jarrow Formulas… Many studies have shown benefits at 200 mg per dose. Some users find …

• Coenzyme Q10 Protects A Breaking Heart

  A Thomas - jarrow.com

  A landmark study published in the Journal of the American College of Cardiology: Heart Failure reported supplementation with coenzyme Q 10(CoQ 10) reduced medical complications …

• The beneficial health effects of green tea amino acid l‐theanine in animal models: Promises and prospects for human trials

  J Williams, D Sergi, AJ McKune… - Phytotherapy …, 2019 - Wiley Online Library

  … Supplementation regimens in mice have also shown that l-THE at a dose of 80 mg/kg and cysteine (200 mg/kg) per day can enhance serum antigen-specific IgG production by …

  201982 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 … the use of l-theanine supplements at pharmacologic doses by … this trending supplement for brain health and relaxation. …

  202525 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 … Also, the KM mice administered with 200 mg/kg L-theanine exhibited both …

  202412 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

  … Sixteen healthy volunteers received alprazolam (1 mg), L-theanine (200 mg) or placebo in a … windows: 150–200 mg before high-stakes decisions 200–300 mg for burnout prevention & …

  2025

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2022-05-19. DSLD Label ID: 265078. 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.