$13.15 $0.62 per serving
Product analysis
Sleep Nighttime Powder combines melatonin with ingredients that may help relaxation and sleep quality. Melatonin can cause drowsiness and slower reactions, making bedtime its more suitable use.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality24
Most ingredient forms are not disclosed, making preparation comparisons difficult. Magnesium citrate is named, but the quality of the combined formula cannot be established confidently.
Ingredient Transparency69
The amount of each ingredient is disclosed, which helps you compare servings. Only the magnesium form is named, leaving most preparations unclear.
Value For Money51
Value is mixed across the ingredients: theanine is more favorably priced than 5-HTP, while glycine sits between them. Cost comparisons for the remaining ingredients remain uncertain.
Customer Satisfaction65
Customer feedback is positive. The small review pool limits how broadly it represents buyer experience.
Product Focus67
The clearest purpose is bedtime support, with melatonin helping sleep timing and theanine potentially helping relaxation. The benefit of combining tryptophan and 5-HTP is uncertain, and their inclusion does not establish broader mood or weight benefits.
- Format
Pack - Container
- 21 Packet(s)
- Per serving
- $0.62
- Customer rating
- 4.4 · 42 ratings
Goals
Impact
Highest effect
Magnesium · 200 mgMelatonin · 0.3 mgTheanine · 200 mgGlycine · 3000 mg
Melatonin supports sleep timing and onset, while theanine may help relaxation and reported sleep quality over repeated use. Glycine provides 3000 mg per serving, matching the amount in a small preliminary bedtime study. Magnesium may offer modest support in poor sleepers. The 5-HTP evidence is limited to a small study in older adults, and the 250 mg tryptophan amount is below the 1 g used in some mixed sleep-onset studies; their shared precursor role does not establish added benefit together.
How this product is rated for Sleep Support
Ingredient fit82
The ingredients address several sleep-related roles, with varying amounts and evidence.
Goal fit
Melatonin, theanine, glycine, magnesium and the precursors provide distinct goal connections.
Dose adequacy
Glycine and theanine match supplied study amounts; magnesium and tryptophan have smaller amount contributions.
Pathways100
The formula covers timing, calming, stress-related, precursor and sleep-onset temperature routes.
Depth
Calming is the strongest covered route.
Breadth
All five evaluated routes receive broad coverage, without proving synergy.
Evidence100
Melatonin anchors the evidence, while other ingredients have smaller or more population-specific studies.
Evidence strength
Melatonin provides the strongest human sleep-onset evidence in this formula.
Studied preparation
The saved findings recognize all six contributing preparations.
Formulation logic100
The contributing ingredients do not require an additional partner, and no assessed conflict was applied.
Partner coverage
Each contributing ingredient can contribute independently or has its required partner.
Conflicts
No assessed ingredient conflict was identified in the supplied facts.
Effective doses
All contributing ingredients meet the saved amount threshold; that threshold does not establish a proven effective sleep dose.
Impact
High effect
Magnesium · 200 mgGlycine · 3000 mgTryptophan · 250 mgTheanine · 200 mg
Theanine may ease tension during stressful tasks, while melatonin is relevant mainly to sleep-associated stress and selected procedural anxiety. Magnesium adds conditional support when intake is low. 5-HTP has limited, situational anxiety findings; tryptophan’s neurotransmitter role does not establish everyday stress relief. Glycine’s supplied metabolic findings do not establish emotional stress relief.
How this product is rated for Stress Relief
Ingredient fit79
The relevant ingredients are the formula’s main active focus. The selected serving makes a partial amount contribution; the comparison does not establish a proven effective dose.
Goal fit
The relevant ingredients are the formula’s main active focus.
Dose adequacy
The selected serving makes a partial amount contribution; the comparison does not establish a proven effective dose.
Pathways100
The clearest emphasis is neural calming. Meaningful coverage includes neural calming, mood and neurotransmitter synthesis, sleep recovery.
Depth
The strongest emphasis is neural calming; this describes the ingredients’ coverage, not a guaranteed benefit.
Breadth
The meaningful coverage spans neural calming, mood and neurotransmitter synthesis, sleep recovery.
Evidence77
Theanine supplies the strongest relevant support. The relevant preparations satisfy the supplied preparation comparison, without guaranteeing the same benefit.
Evidence strength
Theanine provides the strongest support among the ingredients with meaningful amounts; its specific limitations still apply.
Studied preparation
The relevant preparations satisfy the supplied preparation comparison, without guaranteeing the same benefit.
Formulation logic100
The relevant ingredients can contribute independently or have their identified supporting partners. The included amounts all make meaningful comparison contributions.
Partner coverage
The relevant ingredients can contribute independently or have their identified supporting partners.
Conflicts
No configured ingredient conflict was identified in the supplied facts.
Effective doses
All ingredients included in the amount check make a meaningful comparison contribution in this selected serving.
Tryptophan Not classified
No linked studies yet.
Impact
Highest effect
Magnesium · 200 mg5-HTP · 100 mg
Theanine may help reduce tension after stressful tasks, though sustained mood improvement remains uncertain. Magnesium can help address low intake associated with depressed mood or apathy. The 200 mg theanine serving matches the amount in the small acute study; the serotonin-related roles of 5-HTP and tryptophan and the sleep-related role of glycine do not establish additional direct mood benefits.
How this product is rated for Mood Support
Ingredient fit78
Theanine, 5-HTP, Glycine, Magnesium and Tryptophan provide the recorded ingredient connection. Most declared amounts approach the saved reference range, while some provide a smaller contribution.
Goal fit
Relevant ingredients are present, but the broader formula is less focused on mood support.
Dose adequacy
Most declared amounts approach the saved reference range, while some provide a smaller contribution.
Pathways80
The strongest recorded connection is monoamine signalling, without establishing a corresponding improvement in mood.
Depth
The strongest recorded connection is monoamine signalling, without establishing a corresponding improvement in mood.
Breadth
The recorded contributions cover calming and serotonin-related functions, with limited support for other areas.
Evidence91
The leading ingredient is recognized in the saved findings, but its population and outcome limitations constrain expectations for general mood support.
Evidence strength
The leading ingredient is recognized in the saved findings, but its population and outcome limitations constrain expectations for general mood support.
Studied preparation
Some preparation details do not match the reviewed material, limiting transfer of the findings to this product.
Formulation logic100
The supplied facts show no configured conflicts or missing required partners. Amount thresholds describe the saved comparison, rather than proven mood efficacy.
Partner coverage
The recognized ingredients do not lack a required partner in the supplied findings; this does not establish added benefit from combining them.
Conflicts
No configured ingredient conflict was identified in the supplied facts.
Effective doses
All counted ingredients meet the saved amount threshold, which is not a proven effective mood dose.
Impact
High effect
Magnesium · 200 mg
Theanine may support short-term attention and calm focus. Small studies support a limited acute role, without establishing lasting cognitive improvement or neuroprotection. Magnesium supports normal nerve function, without establishing generic cognitive enhancement. Melatonin's sleep-timing role and tryptophan's precursor role do not establish next-day memory or executive-function improvement. Their amounts receive differing recognition in the saved findings.
How this product is rated for Brain Health
Ingredient fit67
Theanine and magnesium contribute alongside sleep-related ingredients.
Goal fit
Theanine and magnesium contribute alongside sleep-related ingredients.
Dose adequacy
Theanine reaches its saved benchmark; magnesium, melatonin and tryptophan receive partial recognition.
Pathways59
Stress and arousal regulation is the strongest represented area. Other areas have limited coverage.
Depth
Stress and arousal regulation is the strongest area in the saved findings; pathway mapping does not establish an improvement in cognition.
Breadth
Only stress and arousal regulation reaches the saved coverage threshold.
Evidence84
Magnesium leads the saved evidence finding. Tryptophan lacks a recognized studied preparation.
Evidence strength
Magnesium leads the saved evidence finding; its recognized role does not establish broad cognitive enhancement.
Studied preparation
Tryptophan lacks a recognized studied preparation.
Formulation logic100
No unmet partner requirement or configured conflict was found. All credited ingredients clear the amount threshold used for inclusion.
Partner coverage
Each credited ingredient works independently or has its required partner.
Conflicts
No configured conflict was matched among the evaluated combinations.
Effective doses
All credited ingredients clear the inclusion threshold; that threshold does not prove an effective clinical dose.
Tryptophan Not classified
No linked studies yet.
Impact
High effect
Magnesium · 200 mgGlycine · 3000 mg
Magnesium supports normal energy processes and has a limited physical-function signal in exercising older women, especially when dietary intake is low. Glycine is a collagen and glutathione precursor, but combination findings do not establish an anti-aging benefit from glycine alone. Melatonin relates to sleep timing; that does not establish slower aging or lasting preservation of function.
How this product is rated for Longevity
Ingredient fit62
The formula contains ingredients relevant to selected aspects of aging, with the recorded amounts and breadth of other uses limiting how focused that connection is.
Goal fit
Some ingredients connect to this goal, while the broader formula and its other linked uses reduce its focus.
Dose adequacy
The recorded serving amounts support differing contributions; amounts alone do not establish an effective daily regimen or a proven aging benefit.
Pathways49
The findings describe specific mechanisms, rather than broad preservation of function or longer life.
Depth
The strongest assigned connection is antioxidant defence, which describes a mechanism rather than a demonstrated whole-body aging outcome.
Breadth
Coverage is concentrated in one mechanism, leaving the other aspects of the goal less supported.
Evidence100
The saved evidence finding must be read alongside the specific population, preparation and outcome limits for each relevant ingredient.
Evidence strength
Magnesium anchors the evidence finding; the relevant population, preparation and outcome limits still apply.
Studied preparation
The saved result recognizes the preparations as matching its evidence criteria; that does not broaden the outcomes demonstrated.
Formulation logic100
The evaluated partner and conflict requirements are satisfied. Serving amounts support the saved inclusions without establishing synergy or personal suitability.
Partner coverage
The included ingredients can contribute alone or have their required partner; this does not establish an added combination benefit.
Conflicts
No conflict was identified by the evaluated rules; that is narrower than an assessment of overall suitability.
Effective doses
The counted ingredients meet the saved amount threshold, which is not a proven minimum effective dose.
Impact
High effect
Magnesium · 200 mgTheanine · 200 mg
L-theanine may help selected verbal-fluency and executive tasks. The supplied trial used 200 mg daily for four weeks, with cognitive differences limited to a subgroup with lower starting performance, so broad improvements in memory or attention are uncertain. Melatonin can cause sedation and slower reactions, working against daytime performance.
How this product is rated for Cognitive Support
Ingredient fit64
L-theanine supplies the relevant connection to cognition. The counted amounts reach the saved benchmarks.
Goal fit
L-theanine contributes to the cognitive focus, alongside ingredients intended for other purposes.
Dose adequacy
The counted ingredients reach the saved amount benchmarks; these comparisons do not establish a proven benefit or a daily dosing schedule.
Pathways51
The strongest recorded connection concerns stress and arousal regulation, through L-theanine. Coverage is concentrated in this one area.
Depth
The strongest recorded connection concerns stress and arousal regulation, through L-theanine.
Breadth
Only stress and arousal regulation reaches the saved coverage threshold, leaving the other named pathways uncovered.
Evidence81
Theanine has limited standalone task evidence, with the supplied cognitive difference confined to a lower-baseline subgroup.
Evidence strength
Theanine has limited standalone task evidence, with the supplied cognitive difference confined to a lower-baseline subgroup.
Studied preparation
The saved preparation finding recognizes the counted ingredients; form naming does not establish superior cognitive effects.
Formulation logic83
Melatonin triggers a conflict because sedation and slower reactions can work against daytime cognitive performance. The counted ingredients have no unmet partner requirement.
Partner coverage
The counted ingredients have no unmet partner requirement in the supplied findings; that does not establish an added benefit from combining them.
Conflicts
Melatonin triggers a conflict because sedation and slower reactions can work against daytime cognitive performance.
Effective doses
All counted ingredients meet the saved minimum amount threshold; this threshold is not a demonstrated effective dose.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Magnesium (Magnesium Citrate) | 200 mg | |
L-Glycine | 3000 mg | |
L-Tryptophan | 250 mg | |
L-Theanine | 200 mg | |
L-5-Hydroxytryptophan | 100 mg | |
Melatonin | 0.3 mg |
Theanine · 200 mg OverallScore88
Each serving provides 200 mg of L-theanine. The whole-product price works out to $0.31 per 100 mg of theanine.
How this ingredient is rated
Active Ingredient Quality & Bioavailability80
The recorded form is L-theanine; no branded source or additional purity evidence is recorded in the saved facts.
Isomer Specificity (L-Theanine)
The ingredient is identified as L-theanine.
Branded Forms & Purity Standards
No branded source or additional purity evidence is recorded in the saved facts.
Dose, Safety & Label Transparency100
200 mg of L-theanine is individually disclosed per serving.
Theanine Dosage Efficacy
The serving contains 200 mg of L-theanine.
Label Transparency & Blends
The 200 mg of L-theanine is individually disclosed per serving.
Value80
The whole-product price works out to $0.31 per 100 mg of theanine.
Price per 100mg L-Theanine
The whole-product price works out to $0.31 per 100 mg of theanine.
Glycine · 3000 mg OverallScore74
The labeled serving provides 3,000 mg of glycine. The whole-product price works out to about $0.21 per 1,000 mg of glycine.
How this ingredient is rated
Active Ingredient Quality & Bioavailability60
A manufacturing-practices claim is recorded for the glycine; independent purity verification is not established by that claim.
Glycine Sourcing and Purity Standards
A manufacturing-practices claim is recorded for the glycine; independent purity verification is not established by that claim.
Dose, Safety & Label Transparency94
The glycine amount is disclosed, making it easy to compare. The available facts also recognize ordinary excipients.
Clinically Relevant Dosage
The labeled serving provides 3,000 mg of glycine, a relatively substantial amount.
Label Transparency and Yield Disclosure
The label records 3,000 mg of glycine per pack.
Clean Label and Excipient Quality
The available facts recognize ordinary excipients; they do not establish a minimal ingredient list.
Value60
The whole-product price works out to about $0.21 per 1,000 mg of glycine.
Cost Efficiency per 1,000mg of Glycine
The whole-product price works out to about $0.21 per 1,000 mg of glycine.
5-HTP · 100 mg OverallScore62
Each serving provides 100 mg of 5-HTP. The recorded warning mentions antidepressants or other serotonin-affecting medications.
How this ingredient is rated
Active Ingredient Quality & Bioavailability40
The saved information identifies 5-HTP without establishing its botanical source.
Botanical Source & Standardization
The botanical source is not established in the saved facts, so source standardization cannot be determined.
Dose, Safety & Label Transparency100
The serving provides 100 mg of 5-HTP. The recorded warning mentions antidepressants or other serotonin-affecting medications.
Dosage Potency & Range
The serving contains 100 mg of 5-HTP.
Safety Warnings & Label Clarity
The recorded warning mentions antidepressants or other serotonin-affecting medications.
Value30
The whole-product serving costs about $0.63; its cost relative to the 5-HTP provided is relatively high in the evaluation.
Price per 100mg 5-HTP
The whole-product price corresponds to about $0.63 per 100 mg of 5-HTP.
Alternative products
Report alternatives
Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Antenatal magnesium sulfate and neuroprotection.
- No. 376-Magnesium Sulphate for Fetal Neuroprotection.
- Magnesium Sulfate Before Preterm Birth for Neuroprotection: An Updated Cochrane Systematic Review.
- Magnesium sulphate for fetal neuroprotection at imminent risk for preterm delivery: a systematic review with meta-analysis and trial sequential analysis.
- Magnesium sulfate and fetal neuroprotection: overview of clinical evidence.
- 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.
- Magnesium sulphate for women at risk of preterm birth for neuroprotection of the fetus.
- Effects of magnesium valproate adjuvant therapy on patients with dementia: A systematic review and meta-analysis.
- Effects of magnesium supplementation on serum brain-derived neurotrophic factor levels and cognitive function in patients undergoing fluoxetine therapy for depression.
- Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial.
- Could intraoperative magnesium sulphate protect against postoperative cognitive dysfunction?