$26.57 $0.59 per serving
Product analysis
Tranquil Sleep offers the convenience of theanine, 5-HTP and melatonin in one sleep-oriented combination. The relatively high cost for 5-HTP and melatonin weakens value.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality25
Theanine and melatonin preparation details are incomplete or inconsistent. The named 5-HTP source does not resolve the uncertainty about the quality of the whole combination.
Ingredient Transparency75
The listed amounts are disclosed, making quantity comparisons possible. Preparation details for theanine and melatonin remain incomplete, while the 5-HTP plant source is named.
Value For Money45
Theanine offers favorable value when the full serving cost is considered for that ingredient. The same serving is costly relative to its 5-HTP and melatonin contributions.
Customer Satisfaction77
Customer feedback is positive but less uniformly enthusiastic. A substantial review base gives that pattern useful support.
Product Focus66
The main ingredients fit a sleep-oriented combination. The broader range of intended uses is less specific than that central purpose.
- Format
Softgel - Container
- 90 Softgel(s)
- Per serving
- $0.59
- Also available
Tranquil Sleep$13.97- Customer rating
- 4.4 · 2,102 ratings
Goals
Impact
Highest effect
Melatonin · 3 mgTheanine · 200 mg
Impact
High effect
Theanine · 200 mg
Impact
High effect
Impact
High effect
5-HTP · 30 mg
Impact
Lower effect
Theanine · 200 mg
Impact
High effect
Theanine · 200 mg
Impact
Lower effect
Theanine · 200 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Suntheanine L-Theanine | 200 mg | |
5-HTP (Griffonia simplicifolia) | 30 mg | |
Melatonin | 3 mg |
Theanine · 200 mg OverallScore96
Each serving provides 200 mg of L-Theanine, at a moderate cost per 100 mg when the full product price is used. The amount is associated with relaxation and focus. A branded form is indicated, though its name is not specified in the available information.
How this ingredient is rated
Active Ingredient Quality & Bioavailability100
The ingredient is specified as L-Theanine. A branded form is indicated, though its name is not specified in the available information.
Isomer Specificity (L-Theanine)
The ingredient is specified as L-Theanine.
Branded Forms & Purity Standards
A branded form is indicated, though its name is not specified in the available information.
Dose, Safety & Label Transparency100
The serving clearly states 200 mg of L-Theanine, an amount associated with relaxation and focus.
Theanine Dosage Efficacy
At 200 mg per serving, it provides an amount associated with relaxation and focus.
Label Transparency & Blends
The L-Theanine amount is individually stated as 200 mg per serving.
Value80
The full product cost per 100 mg of theanine is moderate.
Price per 100mg L-Theanine
Using the full product price, the cost per 100 mg of theanine is moderate.
Melatonin · 3 mg OverallScore70
The serving offers 3 mg of melatonin at a high cost per serving. An independent laboratory certification claim is present.
How this ingredient is rated
Active Ingredient Quality & Bioavailability60
An independent laboratory certification claim is present.
Third-Party Purity Verification
An independent laboratory certification claim is present.
Dose, Safety & Label Transparency100
The serving contains 3 mg of melatonin.
Physiological Dosing Alignment
The serving contains 3 mg of melatonin.
Value30
The cost per serving is high.
Price Per Serving Efficiency
The cost per serving is high.
5-HTP (Griffonia simplicifolia) · 30 mg OverallScore55
A serving provides 30 mg of 5-HTP, at a high cost per 100 mg. Griffonia simplicifolia is named, but its 5-HTP standardization percentage is not stated. General warnings are present, but a specific warning about serotonin-related medications is not stated. The serving also contains 200 mg L-theanine and 3 mg melatonin.
How this ingredient is rated
Active Ingredient Quality & Bioavailability70
Griffonia simplicifolia is named, but its 5-HTP standardization percentage is not stated.
Botanical Source & Standardization
Griffonia simplicifolia is named, but its 5-HTP standardization percentage is not stated.
Dose, Safety & Label Transparency67
The serving provides 30 mg of 5-HTP. The serving also contains 200 mg L-theanine and 3 mg melatonin. General warnings are present, but a specific warning about serotonin-related medications is not stated.
Dosage Potency & Range
The serving provides 30 mg of 5-HTP. The serving also contains 200 mg L-theanine and 3 mg melatonin.
Safety Warnings & Label Clarity
General warnings are present, but a specific warning about serotonin-related medications is not stated.
Value0
The cost per 100 mg of 5-HTP is high.
Price per 100mg 5-HTP
The cost per 100 mg of 5-HTP is high.
Alternative products
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Comparative Efficacy, Tolerability, and Acceptability of Donanemab, Lecanemab, Aducanumab, Melatonin, and Aerobic Exercise for a Short Time on Cognitive Function in Mild Cognitive Impairment and Mild Alzheimer's Disease: A Systematic Review and Network Meta-Analysis.
- Melatonin for sleep and cognitive outcomes in older adults with cognitive impairment: a meta-analysis of randomised controlled trials.
- Add-on prolonged-release melatonin for cognitive function and sleep in mild to moderate Alzheimer's disease: a 6-month, randomized, placebo-controlled, multicenter trial.
- Early Oral Melatonin Supplementation Supports White Matter Maturation in Preterm Infants: Neuroprotective Insights of an Antioxidant Molecule.
- Efficacy and Safety of Melatonin in Migraine Prophylaxis: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
- Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
- A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of AlphaWave® L-Theanine on Stress in a Healthy Adult Population.
- 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.
- Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task.
- Effects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study.
- Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study.
- Acute effects of theanine, caffeine and theanine-caffeine combination on attention.
- Safety and Efficacy of AlphaWave® L-Theanine Supplementation for 28 Days in Healthy Adults with Moderate Stress: A Randomized, Double-Blind, Placebo-Controlled Trial.
- 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.
- Comparative study of efficacy of l-5-hydroxytryptophan and fluoxetine in patients presenting with first depressive episode.
- The Impact of 5-Hydroxytryptophan Supplementation on Cognitive Function and Mood in Singapore Older Adults: A Randomized Controlled Trial.
- Effects of 5-hydroxytryptophan on distinct types of depression: a systematic review and meta-analysis.
- Tryptophan and 5-hydroxytryptophan for depression.
- 5-Hydroxytryptophan (5-HTP) and a MAOI (nialamide) in the treatment of depressions. A double-blind controlled study.
- l-theanine adjunct to sertraline for major depressive disorder: A randomized, double-blind, placebo-controlled clinical trial.