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)

  $35.36
• 

  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)

  $19.48Lowest
• 

  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

  Jarrow Formulas4.7(238)

  $27.99
• 

  Jarrow Formulas - Gaba Soothe

  Pure Prescriptions4.7(238)

  $28.99

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.

• The Vitamin Shoppe

  4.5 (173)

  Vitamin & supplements store

  2535 Richmond Ave, Staten Island, NY 10314

  Directions(718) 477-1967

• GNC

  4.3 (73)

  Vitamin & supplements store

  2040 Forest Plaza, Staten Island, NY 10303

  Directions(718) 285-4350

• Underground Nutrition Garwood

  5.0 (160)

  Vitamin & supplements store

  331 South Ave D-E, Garwood, NJ 07027

  Directions(908) 928-0235

• GNC

  4.3 (23)

  Vitamin & supplements store

  321 NJ-440 Spc 9, Jersey City, NJ 07305

  Directions(201) 427-1025

• GNC

  4.8 (329)

  Vitamin & supplements store

  903 Bayonne Crossing Way, Bayonne, NJ 07002

  Directions(201) 858-4272

• The Vitamin Shoppe

  4.6 (74)

  Vitamin & supplements store

  2602 Hylan Blvd Suite A, Staten Island, NY 10306

  Directions(718) 351-5827

• The Vitamin Shoppe

  4.5 (61)

  Vitamin & supplements store

  480 86th St, Brooklyn, NY 11209

  Directions(718) 491-9768

• GNC

  4.5 (128)

  Vitamin & supplements store

  432 86th St, Brooklyn, NY 11209

  Directions(718) 680-0901

• 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 2019-04-25. DSLD Label ID: 201846. 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.