Home/ Supplements/ L Theanine/ Active Focus

Active Focus

product on market Softgel Capsule Bayer One A Day Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · grounded in 1 source · methodology

L-theanine and caffeine are supported by moderate evidence for improving attention and cognitive performance. Ginseng is also included to support mental alertness, though research on its efficacy varies. Overall, these ingredients are generally recognized as safe for most adults.

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

Label

Product Label

Label for Active Focus
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
30
Servings
Other Combinations
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

200 mg
Market median: 200.0mg (358 products) 9 studies (A:0, B:2)
Market median: 450.0mg (390 products) 160 studies (A:0, B:63)
75 mg
Market median: 180.0mg (239 products) 49 studies (A:1, B:19)

Other Ingredients

Hydroxypropyl Methylcellulose Rice Rice extract Gum Arabic Sunflower Oil
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: Adults: Take 1 capsule daily.

Warnings & Precautions

Do not use this product if you are pregnant, breast-feeding, or are allergic to any ingredients in this product.

Do not use this product if you are pregnant, breast-feeding, or are allergic to any ingredients in this product. If you experience an allergic reaction or other unexpected symptoms, discontinue use and contact a health professional.

If you have any medical conditions or are taking any medications, ask a health professional before use.

This product contains about as much caffeine as a cup of coffee (75 mg).

For adults 18 years of age and older Not for children Keep out of reach of children

Do not exceed recommended intake Do not use if seal is cut or broken Avoid excessive heat.

Formulation Notes

Supports attention, concentration, and focus

Additional Information

Store at room temperature. Avoid excessive heat. Close cap tightly after use.

Metadata

Product Details

UPC / SKU0 16500 59996 8
DSLD Entry Date2024-05-23
Product TypeOther Combinations
FormSoftgel Capsule
BrandBayer One A Day
DSLD ID313333
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

Tranquil Sleep
Natural Factors Stress-Relax · Softgel Capsule
100
Tranquil Sleep
Natural Factors Stress-Relax · Softgel Capsule
100
L-Theanine
SmarterVitamins · Softgel Capsule
100
L-Theanine 200 mg
SportsResearch · Softgel Capsule
100
L-Theanine 200 mg
SR Sports Research · Softgel Capsule
100
View all L Theanine products →
L Theanine research Best L Theanine All L Theanine products More from Bayer One A Day 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.