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GABA L-Theanine Stress B Lozenge Mango Tangerine

product on market Lozenge KAL Safety: 97/100
97/100

This product looks safe

  • Folate: 680mg is 680.0× the Tolerable Upper Intake Level (1.0mg)
  • 67% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

This product contains a blend of B vitamins and Vitamin C, which are essential for energy metabolism and immune function. Research provides strong evidence for the role of these nutrients in maintaining general health. However, the overall evidence coverage for this specific ingredient profile is limited.

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

Alerts

Safety Alerts

Folate: 680mg is 680.0× the Tolerable Upper Intake Level (1.0mg)

Label

Product Label

Label for GABA L-Theanine Stress B Lozenge Mango Tangerine
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Lozenge(s)
Serving Size
50
Servings
Other Combinations
Product Type
67%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Total Carbohydrates
1 Gram(s) (1% DV)
Vitamin C
10 mg (11% DV)
4 mg (333% DV)
3.3× RDA — above typical dose 76 studies (A:0, B:33)
4 mg (25% DV)
Within RDA (0.3× RDA) 196 studies (A:5, B:63)
10 mg (588% DV)
7.7× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
680 mcg DFE (170% DV)
Exceeds UL by 680.0× (UL: 1.0 mg) 226 studies (A:10, B:105)
1000 mcg (41667% DV)
416.7× RDA — above typical dose 139 studies (A:1, B:44)
10 mg (200% DV)
2.0× RDA — within safe limits 2 studies — no high-quality reviews
3.9 mg (1% DV)
Market median: 125.0mg (294 products) 38 studies (A:1, B:7)
Gamma-Aminobutyric Acid
50 mg
50 mg
Market median: 200.0mg (358 products) 9 studies (A:0, B:2)
10 mg
Market median: 550.0mg (217 products) 29 studies (A:0, B:5)

Other Ingredients

Xylitol Fructose Mango Flavor, Natural Other Natural Flavors Cellulose Stearic Acid Silica Stevia Leaf Extract
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

2 Daily

Directions: Dissolve 2 lozenges in mouth daily. Use only as directed.

Warnings & Precautions

Warning: Do not use if safety seal is broken or missing. Keep your licensed health care practitioner informed when using this product.

Keep out of reach of children.

Formulation Notes

Relaxation Support

Mango Tangerine Natural Flavor

Vegan

Additional Information

PCR Bottle

Vegan

Seal tightly after each use, and store in a cool dry place.

Metadata

Product Details

UPC / SKU0 21245 27691 3
DSLD Entry Date2024-12-21
Product TypeOther Combinations
FormLozenge
BrandKAL
DSLD ID322908
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 →

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