Home/ Supplements/ L Theanine/ L-Theanine Calm Caps

L-Theanine Calm Caps

product on market Capsule Nature's Truth Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 75% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

L-theanine, ashwagandha, chamomile, and passion flower are supported by moderate to strong evidence for promoting relaxation and reducing stress. These ingredients typically act by modulating neurotransmitters to support a calm state of mind. Research indicates these botanical and amino acid components are generally well-tolerated.

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

Label

Product Label

Label for L-Theanine Calm Caps
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Vegetarian Capsule(s)
Serving Size
45
Servings
Other Combinations
Product Type
75%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

200 mg
Market median: 200.0mg (358 products) 9 studies (A:0, B:2)
50 mg
Market median: 450.0mg (502 products) 28 studies (A:0, B:8)
50 mg
Market median: 400.0mg (142 products) 10 studies (A:0, B:2)
Passion Flower
25 mg

Other Ingredients

Cellulose Vegetarian Capsule Magnesium Stearate Silica
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: For adults, take two (2) vegetarian capsules daily, preferably 30 minutes before bedtime or as needed.

Warnings & Precautions

Warning: Not intended for use by pregnant or nursing women. If you are taking any medications or surgical procedure or have any medical condition, consult your doctor before use.

Avoid this product if you are allergic to ragweed or daisy-like flowers.

If any adverse reactions occur, immediately stop using this product and consult your doctor. Excessive consumption may impair ability to drive a motor vehicle or operate heavy equipment. If seal under cap is damaged or missing, don not use.

Not intended for use by persons under age of 18. Keep out of reach of children.

Formulation Notes

L-Theanine Calm Caps plus Passion flower, ashwagandha & chamomile

Gluten free Non GMO

Supports a relaxed, calm mood

No gluten, wheat, yeast, milk, lactose, soy, artificial color, artificial flavor, artificial sweetener, preservatives. Non-GMO

Vegetarian formula

Additional Information

100% Quality Satisfaction guarantee

Store in a cool, dry place.

Our Non-GMO Pledge Visit our website

Vitamins

Metadata

Product Details

UPC / SKU8 40093 11398 6
DSLD Entry Date2024-02-22
Product TypeOther Combinations
FormCapsule
BrandNature's Truth
DSLD ID306736
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 →
Compare

Similar Products

L-Theanine
XYMOGEN · Capsule
100
L-Theanine
XYMOGEN · Capsule
100
Thea-Zen
HBC Protocols · Capsule
100
L-Theanine 100 mg
Newflower Farmers Markets · Capsule
100
L-Theanine 200 mg
Vitamin World · Capsule
100
View all L Theanine products →
L Theanine research Best L Theanine All L Theanine products More from Nature's Truth View on NIH DSLD →

This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.