🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

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Label Data

1 Tablet(s) Serving Size
120 Servings
Non-Nutrient/Non-Botanical Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

200 mg
📊 Market median: 200.0mg (358 products) 📚 9 studies (Tier A: 0, B: 2)
This product: 200mg

Other Ingredients

Dicalcium Phosphate Microcrystalline Cellulose Stearic Acid Croscarmellose Sodium Silicon Dioxide Magnesium Stearate Pharmaceutical Glaze

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (92% of products) Nutrient (22% of products)

Target Groups

Adult (18 - 50 Years) Gluten Free Sugar Free

Product Information

📋 Directions for Use

Suggested Use: As a dietary supplement, take one (1) tablet one to two times daily as needed, preferably on empty stomach, or as directed by your qualified healthcare professional.

⚠️ Warnings & Precautions

Keep out of the reach of children.

Do not use if safety seal is broken or missing.

GMP Good Manufacturing Practice Product

Caution: For adults only, if you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

🧪 Formulation Notes

L-Theanine is a unique amino acid naturally found in green tea that exerts beneficial effects on brain metabolism. Animal studies have shown that L-theanine crosses the blood brain barrier, increases dopamine and GABA levels in the brain, and inhibits the stimulatory properties of caffeine. L-Theanine promotes relaxation without the drowsiness or negative side effects associated with other calming agents as measured by increased generation of alpha-waves. Certain research publications indicate that L-Theanine may help support the following: Supports healthy cardiovascular system. Supports healthy brain and nervous system. Supports learning ability. Supports relaxation and well-being.

Premium formula

3rd party lab tested

No artificial color, flavor or sweetener, no preservatives, no sugar, no starch, no corn, no soy, no egg, no lactose, no gluten, no wheat, no yeast, no fish. Sodium free.

Additional Information

Keep in cool, dry place.

Made in USA

Product Details

UPC / SKU 8 17716 01854 6
DSLD Entry Date 2022-07-21
Product Type Non-Nutrient/Non-Botanical
Form Tablet or Pill
DSLD ID 269823
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
Systematic Review Nutritional neuroscience 2026
B The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis
Meta Analysis Sleep medicine reviews 2025
B The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
Rct Nutritional neuroscience 2010
B Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
Rct Nutrients 2019
B The Role of Supplements and Over-the-Counter Products to Improve Sleep in Children: A Systematic Review
Systematic Review International journal of molecular sciences 2023
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
Meta Analysis Nutrition reviews 2025
B Effect of Alpha-S1-Casein Tryptic Hydrolysate and L-Theanine on Poor Sleep Quality: A Double Blind, Randomized Placebo-Controlled Crossover Trial
Rct Nutrients 2022
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
Rct Nutritional neuroscience 2025
B The combined effects of L-theanine and caffeine on cognitive performance and mood
Rct Nutritional neuroscience 2008
B Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis
Meta Analysis Nutrition reviews 2014
View all evidence for L Theanine →

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