Theanine Calm Caps

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

Product Label

Label for Theanine Calm Caps
📄 Open Full PDF View on NIH DSLD →
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Safety Alerts

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

Label Data

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

Supplement Facts — Evidence Check

25 mg (1667% DV)
📊 20.8× RDA — above typical dose 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 25mg
25 mg (1471% DV)
📊 19.2× RDA — above typical dose 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 25mg
50 mg (250% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 1.4× (UL: 35 mg) 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 50mg UL 35mg
25 mg (1250% DV)
📊 19.2× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 25mg UL 100mg
400 mcg (100% DV)
✅ Within RDA (1.0× RDA of 0.4 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 0.4mg UL 1.0mg
100 mcg (1667% DV)
📊 41.7× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.1mg
500 mcg (167% DV)
📊 16.7× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)
RDA 0.03mg This product: 0.5mg
25 mg (250% DV)
📊 5.0× RDA — above typical dose 📚 1 studies — no high-quality reviews
RDA 5mg This product: 25mg
200 mg
📊 Market median: 200.0mg (358 products) 📚 9 studies (Tier A: 0, B: 2)
This product: 200mg
Adaptogenic Blend
200 mg

Other Ingredients

Vegetable Cellulose Gelatin Silica Vegetable Magnesium Stearate

Label Claims — Verification

❓ 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

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.

Product Details

UPC / SKU 7 66443 31500 1
DSLD Entry Date 2011-10-26
Product Type Other Combinations
Form Capsule
Brand Vitamin World
DSLD ID 1295
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
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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