L-Theanine 200 mg
100/100
This product looks safe
- No ingredients exceed tolerable upper intake levels
- 50% of ingredients have research evidence
A
Label Compliance Grade
What the Evidence Says
AI-generated · Qwen 3.6 · methodologyL-theanine is supported by moderate evidence for promoting relaxation and reducing stress without causing sedation. Stevia leaf extract serves as a non-nutritive sweetener with a well-established safety profile. The overall evidence coverage for this specific formulation is limited.
AI-generated summary based on research evidence. Not medical advice.
Label
Product Label
Details
Label Data
2 MicroLingual(R) Tablet(s)
Serving Size
50
Servings
Other Combinations
Product Type
50%
Evidence Coverage
Ingredients
Supplement Facts — Evidence Check
200 mg
Market median: 200.0mg (358 products)
9 studies (A:0, B:2)
Stevia leaf extract
2 mg
Other Ingredients
Lactose
Acacia Gum
Claims
Label Claims — Verification
Unverified
All Other
Info
Product Information
Directions for Use
Directions: As a dietary supplement, dissolve two Microlingual tablets under the tongue as directed by your healthcare provider (physician). This product may also be swallowed.
Formulation Notes
GMO free
Metadata
Product Details
DSLD Entry Date2020-01-25
Product TypeOther Combinations
FormTablet or Pill
BrandSuperior Source
DSLD ID212697
Data Updated2026-04-11
Research
Research Evidence
37
Research Sources
53
Avg Quality
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
B
The combined effects of L-theanine and caffeine on cognitive performance and mood
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.