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L-Theanine 200 mg Natural Mint Flavor

product on market Tablet or Pill Vitamin World Safety: 100/100
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 · methodology

L-theanine is supported by moderate evidence for its ability to promote relaxation and reduce stress without causing sedation. Sodium is an essential electrolyte used for maintaining fluid balance. The overall evidence coverage for this specific formulation is limited.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for L-Theanine 200 mg Natural Mint Flavor
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Tablet(s)
Serving Size
45
Servings
Non-Nutrient/Non-Botanical
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Sodium
10 mg (1% DV)
200 mg
Market median: 200.0mg (358 products) 9 studies (A:0, B:2)

Other Ingredients

Dextrose Vegetable Cellulose Crospovidone Stearic Acid Natural flavor Stevia extract Contains Less Than 2% of
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: For adults, take two (2) tablets daily on an empty stomach. Dissolve tablets in mouth before swallowing.

Warnings & Precautions

Warning: 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.

Keep out of reach of children.

Do not use if seal under cap is broken or missing.

Formulation Notes

No Artificial Color, No Artificial Flavor, No Preservatives, No Milk, No Lactose, No Soy, No Gluten, No Wheat, No Yeast, No Fish.

L-Theanine 200 mg per serving

Additional Information

L-Theanine is a non-essential amino acid that supports a calm and relaxed mood. L-Theanine is the predominant amino acid of green tea.

Our convenient quick dissolve tablets have a soothing, natural mint flavor.

Quality Assured

Store at room temperature.

To reorder prod. #55493 www.vitaminworld.com 1-800-228-4533

PROD. #55493 B55493 02C

Quick dissolve

Supports a calm, relaxed mood

Metadata

Product Details

UPC / SKU7 66443 55493 6
DSLD Entry Date2016-06-24
Product TypeNon-Nutrient/Non-Botanical
FormTablet or Pill
DSLD ID60624
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
Systematic Review Nutritional neuroscience 2026 PubMed DOI
B The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis
Meta Analysis Sleep medicine reviews 2025 PubMed DOI
B The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
Rct Nutritional neuroscience 2010 PubMed DOI
B Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
Rct Nutrients 2019 PubMed DOI
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 PubMed DOI
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 PubMed DOI
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 PubMed DOI
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 PubMed DOI
B The combined effects of L-theanine and caffeine on cognitive performance and mood
Rct Nutritional neuroscience 2008 PubMed DOI
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 PubMed DOI
View all evidence for L Theanine →
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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.