🟢 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

📸

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 Capsule(s) Serving Size
60 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

Rice Flour Cellulose, Modified

Label Claims — Verification

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

Target Groups

Adult (18 - 50 Years) No Allergies Gluten Free Dairy Free

Product Information

📋 Directions for Use

Suggested Use: As a dietary supplement, healthy adults take one capsule daily in the morning with or without food or as recommended by a qualified healthcare professional.

⚠️ Warnings & Precautions

Warnings: For adults only. Keep out of reach of children.

Consult with a qualified healthcare professional prior to taking this product especially if you are pregnant, nursing, have a diagnosed medical condition, or are taking a prescription medication.

Sealed for your protection. Do not use if seal is missing or broken.

This product is not manufactured with milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soy, sesame, or gluten. Produced in an FDA-registered, third-party audited, and cGMP-compliant facility that may process other products that contain these allergens or ingredients.

🧪 Formulation Notes

L-Theanine is a naturally occurring amino acid found in several types of tea including black, oolong, and green tea.

This product is not manufactured with milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soy, sesame, or gluten.

L-Theanine 200 mg per serving

Vcaps Plus

Additional Information

Store at room temperature, in a dry place. Protect product from excessive heat, freezing, humidity, and light.

Product Details

UPC / SKU 8 96996 00040 3
DSLD Entry Date 2025-09-25
Product Type Non-Nutrient/Non-Botanical
Form Capsule
DSLD ID 337938
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 →

Compare Similar Products

View all L Theanine products →