Theanine XR Stress Relief
100/100
This product looks safe
- No ingredients exceed tolerable upper intake levels
- 67% of ingredients have research evidence
A
Label Compliance Grade
Product Label
Have a supplement label? Find it here.
Upload a photo of any supplement label to search our database of 92,312 products.
Label Data
1 Vegetarian Tablet(s)
Serving Size
30
Servings
Other Combinations
Product Type
67%
Evidence Coverage
Supplement Facts — Evidence Check
Calcium
50 mg
(4% DV)
40 mg
(3% DV)
✅ Within RDA (0.1× RDA of 700 mg)
📚 12 studies (Tier A: 0, B: 3)
400 mg
📊 Market median: 200.0mg (358 products)
📚 9 studies (Tier A: 0, B: 2)
Other Ingredients
Microcrystalline Cellulose
Hydroxypropyl Methylcellulose
Hydroxypropyl Cellulose
Stearic Acid
Silica
Stearate
Croscarmellose Sodium
Glycerin
Label Claims — Verification
❓
All Other
❓
Structure/Function
All Other (99% of products)
Structure/Function (92% of products)
Nutrient (22% of products)
Target Groups
Vegetarian
Adult (18 - 50 Years)
Gluten Free
Product Information
📋 Directions for Use
Directions: Take one (1) tablet daily, or as recommended by a healthcare practitioner.
⚠️ Warnings & Precautions
Read the entire label and follow the directions carefully prior to use.
Warnings: Keep out of reach of children.
Do not exceed recommended dose. Do not purchase if outer seal is damaged.
Consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.
To report a serious adverse event or obtain product information, contact 1-866-280-2852.
🧪 Formulation Notes
Gluten free Non GMO Le certified
Immediate and extend release L-Theanine
Additional Information
Scan for product info
Non GMO Le certified
Store tightly closed in a cool, dry place.
Product Details
UPC / SKU
7 37870 24293 2
DSLD Entry Date
2025-05-21
Product Type
Other Combinations
Form
Tablet or Pill
Brand
Life Extension
DSLD ID
328727
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
Compare Similar Products
L-Theanine 200 mg & Valerian Extract 100 mg
Puritan's Pride
100
SunTheanine Citrus 100 mg
Tomorrow's Nutrition
100
Chewable L-Theanine 100 mg
NOW
100
L-Theanine 200 mg Sweet Cherry
EZ Melts
100
L-Theanine 200 mg
Lamberts Healthcare
100