Theanine 100 mg®
Non-Nutrient / Non-BotanicalBrand: Jarrow Formulas
Net Contents
60 Capsule(s)
Serving Size
1 Capsule(s)
Servings Per Container
60
Supplement Form
Capsule
Bar Code (UPC/SKU)
7 90011 15050 3
Product Version
09414THE PROD # 115050
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
Single-ingredient formula listed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
Label states: Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Allergen Guide
Free From
- Milk
- Egg
- Fish
- Peanut
- Wheat
- Soy
- Gluten
Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.
Supplement Facts
Serving Size: 1 Capsule(s) · 1–2 per day
| Ingredient | Amount Per Serving | |
|---|---|---|
| L-Theanine | 100 mg | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
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.
Warnings & Precautions
Precautions re: Pregnant or Nursing or Prescription Medications
NOTE: If you have a medical condition, are pregnant, lactating, trying to conceive, under the age of 18, or taking medications, consult your healthcare professional before using this product.
Precautions re: Children
NOTE: If you have a medical condition, are pregnant, lactating, trying to conceive, under the age of 18, or taking medications, consult your healthcare professional before using this product.
Precautions re: Children
Keep out of the reach of children.
Formulation
Formulation re: Does NOT Contain
No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts.
FDA Statements
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
FDA Statement of Identity
Dietary Supplement
Other Label Statements
Brand IP Statement(s) re: (c), (TM), (SM)
Jarrow Formulas Theanine is made enzymatically from amino acids and is identical to the theanine found in green tea.
General Statements: All Other Content
Theanine is a unique amino acid found almost exclusively in green tea that exerts beneficial effects on brain metabolism.* Theanine induces relaxation without causing drowsiness, as measured by increased generation of alpha-waves.* Theanine may improve learning ability and sensations of pleasure by affecting dopamine and serotonin neurotransmitters in the brain.* Also, theanine exerts protective effects on the brain by mitigating glutamate toxicity.*
General Statements: All Other Content
Neurologically-Active Amino Acid Promotes Relaxation* Supports Learning Ability* 100 milligrams
Seals/Symbols
Suntheanine
Brand IP Statement(s) re: (c), (TM), (SM)
Suntheanine is a registered trademark of Taiyo International, Inc.
General: Product/Version Code
09414THE PROD # 115050
Brand IP Statement(s) re: (c), (TM), (SM)
Superior Nutrition and Formulation
Brand IP Statement(s) re: (c), (TM), (SM)
2014 Jarrow Formulas
Manufacturer & Distributor
Distributor
Jarrow Formulas
P.O. Box 35994, Los Angeles, CA, 90035-4317
Market Reference
Jarrow Formulas Theanine 100 mg 60 Capsules
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Jarrow Formulas Theanine 200mg 60 Capsules (2 Pack)
Pure Prescriptions4.8(989)$32.49
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New Beginnings L-Theanine 100mg
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L-Theanine
Enar Pharma$9.09Lowest
Where to Buy Locally
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
Supplement Warehouse
4.7 (228)Vitamin & supplements store
181 W Crossroads Pkwy Ste F, Bolingbrook, IL 60440
GNC
4.4 (50)Vitamin & supplements store
2312 Rte 59, Plainfield, IL 60586
NXT Levl Nutrition - Joliet
3.7 (3)Vitamin & supplements store
1005 W Jefferson St, Joliet, IL 60435
Superior Level Nutrition
5.0 (68)Vitamin & supplements store
1417 E Lincoln Hwy, New Lenox, IL 60451
The Vitamin Shoppe
4.5 (130)Vitamin & supplements store
123 N Weber Rd, Bolingbrook, IL 60490
GNC
5.0 (49)Vitamin & supplements store
2863 95th St #151, Naperville, IL 60564
GNC
4.3 (62)Vitamin & supplements store
Mall Loop Dr, Joliet, IL 60431
Research & Studies
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 citationsl-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 citationsImprovement 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 citationsCoenzyme 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.
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