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Sleep Soundly Advanced

product on market Other (e.g. tea bag) GNC Preventive Nutrition Safety: 90/100
90/100

This product looks safe

  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 50% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Melatonin and L-theanine are supported by moderate to strong evidence for promoting sleep onset and relaxation. Tryptophan and other calming agents may further support sleep quality, though overall evidence coverage for this specific blend is limited. The product maintains a high safety score.

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

Alerts

Safety Alerts

Contains proprietary blend — exact ingredient amounts not disclosed

Label

Product Label

Label for Sleep Soundly Advanced
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Caplet(s)
Serving Size
Other Combinations
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

TryptoPure
500 mg
Proprietary Calming Blend
200 mg
Market median: 200.0mg (358 products) 9 studies (A:0, B:2)
3 mg
Market median: 3.0mg (984 products) 240 studies (A:2, B:109)

Other Ingredients

Cellulose Dicalcium Phosphate Titanium Dioxide Vegetable Acetoglycerides Carmine color Red Cabbage juice powder
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Warnings & Precautions

KEEP OUT OF REACH OF CHILDREN.

WARNING: For adult use only at bedtime. This product is not to be taken by pregnant or lactating women.

Discontinue use two weeks prior to surgery.

Do not exceed recommended dose.

If your are taking medication or have a medical condition, consult a physician before using this product. Do not use in conjunction with alcoholic beverages, when driving a vehicle, or while operating machinery.

Formulation Notes

Features melatonin, L-theanine and tryptophan

Additional Information

Store in a cool, dry place.

Calms, relaxes and supports restful sleep*

CODE 765012 HLG

SLEEP

Metadata

Product Details

UPC / SKU0 48107 08399 1
DSLD Entry Date2011-11-25
Product TypeOther Combinations
FormOther (e.g. tea bag)
BrandGNC Preventive Nutrition
DSLD ID1850
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.