$41.97 $0.69 per serving
Product analysis
Tranquil Sleep combines melatonin for sleep timing and falling asleep with theanine that may help you relax. Melatonin can cause sleepiness and slower reactions for hours, which limits its suitability for daytime focus.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality24
Ingredient quality is difficult to compare because most forms are not disclosed. The identified 5-HTP source does not establish the quality of the full mixture.
Ingredient Transparency70
All listed amounts are disclosed, making serving sizes easier to compare. Only the 5-HTP source is identified by form, leaving the rest less clear.
Value For Money44
Theanine offers favourable value, but the 5-HTP and melatonin portions compare poorly on cost. Paying for the combination therefore offers less convincing value than theanine alone suggests.
Customer Satisfaction82
Customers give consistently positive ratings, with a sizeable number of responses behind them. Ratings describe satisfaction and do not establish effectiveness or safety.
Product Focus66
Sleep timing, falling asleep and relaxation are the clearest uses. Wider mood and cognitive benefits are less certain, and melatonin-related sleepiness works against daytime attention.
- Format
Tablet - Container
- 120 Tablet(s)
- Per serving
- $0.69
- Also available
Extra Strength Tranquil Sleep$34.97- Customer rating
- 4.5 · 3,294 ratings
Goals
Impact
Highest effect
Melatonin · 3 mgTheanine · 200 mg
Impact
High effect
Theanine · 200 mg
Impact
High effect
5-HTP · 30 mg
Impact
High effect
Impact
Lower effect
Theanine · 200 mg
Impact
High effect
Theanine · 200 mg
Impact
Lower effect
Theanine · 200 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Calories | 15 Calorie(s) | |
Total Carbohydrates | 3 Gram(s) | |
Suntheanine L-Theanine | 200 mg | |
5-HTP (Griffonia simplicifolia) | 30 mg | |
Melatonin | 3 mg |
Theanine · 200 mg OverallScore96
200 mg of L-theanine per serving comes at a competitive cost per 100 mg. That amount is within the range associated with relaxation and focus. A branded source is indicated, though its name is not specified.
How this ingredient is rated
Active Ingredient Quality & Bioavailability100
It uses L-theanine, the form associated with calming and focus. A branded source is indicated, though its name is not specified.
Isomer Specificity (L-Theanine)
It uses L-theanine, the form associated with calming and focus.
Branded Forms & Purity Standards
A branded source is indicated, though its name is not specified.
Dose, Safety & Label Transparency100
A serving provides 200 mg of L-theanine. That amount is within the range associated with relaxation and focus. The amount and source are individually stated.
Theanine Dosage Efficacy
A serving provides 200 mg of L-theanine. That amount is within the range associated with relaxation and focus.
Label Transparency & Blends
The amount and source are individually stated.
Value80
The cost per 100 mg of theanine is competitive.
Price per 100mg L-Theanine
The cost per 100 mg of theanine is competitive.
Melatonin · 3 mg OverallScore70
A serving provides 3 mg of melatonin at a high cost per serving. It comes as a chewable tablet; its melatonin source is unclear. A third-party laboratory claim is present, but it has not been independently confirmed.
How this ingredient is rated
Active Ingredient Quality & Bioavailability60
It comes as a chewable tablet, but the melatonin source is unclear. A third-party laboratory claim is present, but it has not been independently confirmed.
Third-Party Purity Verification
A third-party laboratory claim is present, but it has not been independently confirmed.
Dose, Safety & Label Transparency100
A serving provides 3 mg of melatonin.
Physiological Dosing Alignment
A serving provides 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 OverallScore60
A serving provides 30 mg of 5-HTP, at a very high cost per 100 mg. The 5-HTP comes from Griffonia simplicifolia, with no 5-HTP standardization percentage stated. The label includes a warning about serotonin-related medication interactions. The serving also contains 200 mg of L-theanine and 3 mg of melatonin.
How this ingredient is rated
Active Ingredient Quality & Bioavailability70
The 5-HTP comes from Griffonia simplicifolia, with no 5-HTP standardization percentage stated.
Botanical Source & Standardization
The 5-HTP comes from Griffonia simplicifolia, with no 5-HTP standardization percentage stated.
Dose, Safety & Label Transparency79
The serving contains 30 mg of 5-HTP. The serving also contains 200 mg of L-theanine and 3 mg of melatonin. The label includes a warning about serotonin-related medication interactions.
Dosage Potency & Range
The serving provides 30 mg of 5-HTP. The serving also contains 200 mg of L-theanine and 3 mg of melatonin.
Safety Warnings & Label Clarity
The label includes a warning about serotonin-related medication interactions.
Value0
The cost per 100 mg of 5-HTP is very high.
Price per 100mg 5-HTP
The cost per 100 mg of 5-HTP is very high.
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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.