🟢 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 Capsule(s) Serving Size
360 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

Gelatin Capsule

Label Claims — Verification

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

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Suggested Use Consume one capsule daily or as recommended by your physician. This product is most effective as part of a healthy diet and active lifestyle. For questions about the use of this product call 800.332.7799.

🧪 Formulation Notes

200 mg of soothing Theanine

Calm relaxed focus - naturally

Andrew Lessman's Theanine provides 200 mg of pure Theanine - one of the most uniquely beneficial and unusual of amino acids. First of all, unlike other amino acids, Theanine is not a building block of protein, but is almost exclusively found in the tea plant (Camellia sinensis) where it accounts for both its distinctive flavor, as well as its unique calming properties. Plus, because Theanine can cross the blood brain barrier, it can deliver its beneficial properties directly to the brain and nervous system. Theanine has been shown to enhance alpha brain-wave activity, which is associated with a relaxed, but still focused and alert state. Theanine promotes the production of the neurotransmitters dopamine and serotonin, which support relaxation and calm. The observation that the caffeine in green tea is less intense than that of coffee results from green tea's abundance of Theanine. In fact Theanine is often used to reduce the uncomfortable effects of caffeine and to support a relaxed state. Theanine can also help to diminish perceived stress and tension while promoting calm attention and focus. In short, Theanine naturally supports the brain and its neurotransmitters promoting calm, relaxed focus without drowsiness.

Contains no additives or common allergens of any kind

Additional Information

For over 40 years Unsurpassed purity, quality and efficacy 100% solar production | zero carbon footprint We remain uniquely committed to you and the planet. You have my unwavering promise. Andrew Lessman, Founder Questions? | Reorders? 800-800-1200 www.procapslabs.com HSN www.HSN.com 800.944.9999 www.QVC.com 800.345.1515

Product Details

UPC / SKU 687198
DSLD Entry Date 2020-05-22
Product Type Non-Nutrient/Non-Botanical
Form Capsule
Brand ProCaps
DSLD ID 220043
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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