L-Theanine 100 mg
100/100
This product looks safe
- No ingredients exceed tolerable upper intake levels
- 50% of ingredients have research evidence
A
Label Compliance Grade
Product Label
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Label Data
1 Capsule(s)
Serving Size
60
Servings
Other Combinations
Product Type
50%
Evidence Coverage
Supplement Facts — Evidence Check
100 mg
📊 Market median: 200.0mg (358 products)
📚 9 studies (Tier A: 0, B: 2)
Glycine
300 mg
Other Ingredients
Vegetarian Cellulose Capsule
Label Claims — Verification
❓
All Other
All Other (99% of products)
Structure/Function (92% of products)
Nutrient (22% of products)
Target Groups
Adult (18 - 50 Years)
Gluten Free
Dairy Free
Product Information
📋 Directions for Use
Directions: One (1) capsule daily, or as directed by a healthcare professional. Best taken between meals.
⚠️ Warnings & Precautions
Caution: Pregnant or lactating women, consult your healthcare professional before taking this product.
Keep tightly closed in a cool, dry place, out of reach of children.
🧪 Formulation Notes
Egg free Gluten free Free of nuts Dairy free
Manufactured in a GMP Compliant Facility
Additional Information
Keep tightly closed in a cool, dry place, out of reach of children.
Product Details
UPC / SKU
8 38287 00146 1
DSLD Entry Date
2022-07-21
Product Type
Other Combinations
Form
Capsule
Brand
Metabolic Maintenance
DSLD ID
274068
Data Updated
2026-04-11
Research Evidence
37
Research Sources
53
Avg Quality Score
22
Rct
10
Systematic Review
3
Meta Analysis
1
Clinical Trial
1
Openfda Safety
B
Examining the effect of L-theanine on sleep: a systematic review of dietary supplementation trials
B
The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis
B
The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
B
Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
B
The Role of Supplements and Over-the-Counter Products to Improve Sleep in Children: A Systematic Review
B
Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
B
Effect of Alpha-S1-Casein Tryptic Hydrolysate and L-Theanine on Poor Sleep Quality: A Double Blind, Randomized Placebo-Controlled Crossover Trial
B
Effect of L-theanine on selective attention in a traffic-related reaction task in sleep-deprived young adults: a double-blind placebo-controlled, crossover study
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