Suntheanine
100/100
This product looks safe
- No ingredients exceed tolerable upper intake levels
- 100% of ingredients have research evidence
A
Label Compliance Grade
What the Evidence Says
AI-generated · Qwen 3.6 · grounded in 1 source · methodologySuntheanine is a patented form of L-theanine, an amino acid researched for its ability to promote relaxation and reduce stress. There is moderate to strong evidence supporting its role in improving attention and cognitive function when paired with caffeine. The ingredient is generally recognized as safe for consumption.
AI-generated summary based on research evidence. Not medical advice.
Label
Product Label
Details
Label Data
1 Capsule(s)
Serving Size
60
Servings
Non-Nutrient/Non-Botanical
Product Type
100%
Evidence Coverage
Ingredients
Supplement Facts — Evidence Check
100 mg
Market median: 200.0mg (358 products)
9 studies (A:0, B:2)
Other Ingredients
Hypromellose
Cellulose
Silicon Dioxide
Magnesium Stearate
Claims
Label Claims — Verification
Unverified
Structure/Function
Info
Product Information
Formulation Notes
L-Theanine
Supports relaxation and alertness Enhances cognitive health by improving focus, promoting mental clarity, and reducing negative effects of stimulants.
Metadata
Product Details
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.