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Theanine Calm Caps

product on market Capsule Vitamin World Safety: 96/100
96/100

This product looks safe

  • Niacin: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)
  • 80% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

The product contains a blend of B vitamins, including Thiamine, Riboflavin, and Niacin, which support cellular energy metabolism and neurological function. There is strong evidence for the role of these nutrients in maintaining overall metabolic health. The ingredient profile maintains a high safety score with minimal reported concerns.

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

Alerts

Safety Alerts

Niacin: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)

Label

Product Label

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

Label Data

2 Capsule(s)
Serving Size
30
Servings
Other Combinations
Product Type
80%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

25 mg (1667% DV)
20.8× RDA — above typical dose 76 studies (A:0, B:33)
25 mg (1471% DV)
19.2× RDA — above typical dose 13 studies (A:0, B:1)
50 mg (250% DV)
Exceeds UL by 1.4× (UL: 35 mg) 196 studies (A:5, B:63)
25 mg (1250% DV)
19.2× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
400 mcg (100% DV)
Within RDA (1.0× RDA) 226 studies (A:10, B:105)
100 mcg (1667% DV)
41.7× RDA — above typical dose 139 studies (A:1, B:44)
500 mcg (167% DV)
16.7× RDA — above typical dose 27 studies (A:0, B:11)
25 mg (250% DV)
5.0× RDA — above typical dose 2 studies — no high-quality reviews
200 mg
Market median: 200.0mg (358 products) 9 studies (A:0, B:2)
Adaptogenic Blend
200 mg

Other Ingredients

Vegetable Cellulose Gelatin Silica Vegetable Magnesium Stearate
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

DIRECTIONS: For adults, take two (2) capsules daily, preferably on an empty stomach.

Warnings & Precautions

WARNING: Not intended for use by pregnant or nursing women. If you are taking any medications, consult your doctor before use. Avoid this product if you are allergic to ragweed or daisy-like flowers. Discontinue use and consult your doctor if any adverse reactions occur. Not intended for use by persons under the age of 18. Keep out of reach of children. Store in a cool, dry place. Do not use if seal under cap is broken or missing.

Formulation Notes

No Artificial Color or Flavor, No Preservatives, No Sugar, No Milk, No Lactose, No Soy, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free.

Additional Information

PROD. #31500 B31500 001A EAZ

For Nervous System Health*

Supports a Calm, Relaxed Mood*

QUALITY ASSURED

This product has been developed, manufactured and packaged by Vitamin World. Our world-class facilities allow us to control exactly what goes into each product. It is your assurance that you are getting the highest quality and freshest products. You have our guarantee!

Get healthy.

Metadata

Product Details

UPC / SKU7 66443 31500 1
DSLD Entry Date2011-10-26
Product TypeOther Combinations
FormCapsule
BrandVitamin World
DSLD ID1295
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.