Double Wood Supplements

L-Theanine 200 mg

Product Quality

Overall evidence-based quality rating

How Product Quality is assessed

8.41Very Good

Price

$0.17/serving

Retail

$19.95

Container

120 servings

Serving

1 Capsule

Brand Quality

8.16

Why this score

Testing practices

Lot Tested
Third-Party Lab Tested
Transparent Batch-Specific COAs
ISO 17025 Lab

Testing coverage

Identity
Purity
Potency
Heavy Metals
Raw Ingredient Testing

Certifications

NSF Certified

Manufacturing standards

cGMP Certified
Made in USA

Innovation

Clinically Studied Product

Active Ingredients

L-Theanine
200 mg
Ingredient research · L-Theanine
L-Theanine is an amino acid found naturally in tea that can promote a calmer mental state without causing marked drowsiness. As a supplement, it may ease perceived stress, support sleep quality, and improve attention when paired with caffeine, although cognitive effects on its own are less consistent.
- Supports selected stress and anxiety-related measures.
Top References
The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review

Ranking

Theanine Products68%

Inactive Ingredients

10 Ideal

GelatinIdeal
Rice FlourIdeal

These statements have not been evaluated by the Food and Drug Administration. Any products and informational content displayed on this page are not intended to diagnose, treat, cure, or prevent any disease.