Theanine 100 mg

Suggested Use

USAGE: Take 1 capsule 1 or 2 times per day with water or juice on an empty stomach or as directed by your qualified healthcare professional.

• 

  Jarrow Formulas Theanine 100 mg 60 Capsules

  iHerb4.8(989)

  $15.59
• 

  Jarrow Formulas Jarrow Theanine 200 mg 60 Caps

  Eddie's Health Shoppe4.8(1000)

  $24.99
• 

  Jarrow Formulas Theanine 200 mg. 60 Capsules

  Village Green Apothecary4.8(1000)

  $23.24
• 

  Jarrow Formulas Theanine 200mg 60 Capsules (2 Pack)

  Pure Prescriptions4.8(989)

  $32.49
• 

  Jarrow Formulas Theanine 100mg Apple Flavor 60 Gummies

  Professional Supplement Center4.8(26)

  $26.99
• 

  Theanine 100mg Stress and Mood Lozenges

  Down to Earth Organic & Natural

  $20.59
• 

  New Beginnings L-Theanine 100mg

  Our Kids

  $31.00
• 

  L-Theanine

  Enar Pharma

  $9.09Lowest

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.

• Nutrition Direct

  4.7 (51)

  Vitamin & supplements store

  1736 Essington Rd Suite E, Joliet, IL 60435

  Directions(815) 782-8849

• Supplement Warehouse

  4.7 (228)

  Vitamin & supplements store

  181 W Crossroads Pkwy Ste F, Bolingbrook, IL 60440

  Directions(630) 965-8526

• GNC

  4.4 (50)

  Vitamin & supplements store

  2312 Rte 59, Plainfield, IL 60586

  Directions(815) 439-7720

• NXT Levl Nutrition - Joliet

  3.7 (3)

  Vitamin & supplements store

  1005 W Jefferson St, Joliet, IL 60435

  Directions(815) 603-9409

• Superior Level Nutrition

  5.0 (68)

  Vitamin & supplements store

  1417 E Lincoln Hwy, New Lenox, IL 60451

  Directions(815) 717-8903

• The Vitamin Shoppe

  4.5 (130)

  Vitamin & supplements store

  123 N Weber Rd, Bolingbrook, IL 60490

  Directions(630) 759-1392

• GNC

  5.0 (49)

  Vitamin & supplements store

  2863 95th St #151, Naperville, IL 60564

  Directions(331) 702-2173

• GNC

  4.3 (62)

  Vitamin & supplements store

  Mall Loop Dr, Joliet, IL 60431

  Directions(815) 439-1160

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

  HMDLT Cost - nootropicology.com

  … can be purchased from various sources, including health food stores, online retailers, and supplement shops. Reputable brands like NOW Foods, Jarrow Formulas, and Thorne …

• 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

  … This study provided evidence that l-THE (10–100 mg/kg/day) attenuated ovalbumin-induced airway inflammation in mice by reducing reactive oxygen species generation, decreasing …

  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

  … in our animal tests at a dose of 100 mg/kg (coefficient of drug interaction (CDI… healthy adults after 1 month of consumption. Our results suggest that a combination of FOS and L-theanine …

  202412 citations

• 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 …

• 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

  … measures of anxiety in healthy human subjects using the model of anticipatory anxiety (AA). Sixteen healthy volunteers received alprazolam (1 mg), L-theanine (200 mg) or placebo in a …

  2025

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2015-10-22. DSLD Label ID: 51402. 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.