$17.58 $0.58 per serving
Product analysis
Sleep Nighttime Powder may help with sleep timing and relaxation through melatonin and theanine, with preliminary sleep-quality support from glycine. Melatonin can cause sedation and slower reactions, so its daytime suitability is limited.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality32
Magnesium citrate has reasonably favorable absorption qualities. Most other forms are not stated, limiting comparisons of the remaining preparations.
Ingredient Transparency69
Amounts are stated for all six ingredients, making serving comparisons possible. Only the magnesium form is named, leaving most preparation details unclear.
Value For Money56
Glycine and theanine compare favorably on cost, while the 5-HTP and melatonin contributions are more expensive. The mixed comparisons make the value depend on which sleep-related ingredients you want.
Customer Satisfaction73
Customer ratings are generally favorable across a large review pool. They offer broad satisfaction feedback without confirming improved sleep.
Product Focus49
Sleep timing and relaxation give the formula its clearest purpose. Its links to many other goals do not establish broad health benefits from the same combination.
- Format
Powder - Container
- 6 Liquid(s)
- Per serving
- $0.58
- Customer rating
- 4.2 · 1,945 ratings
Goals
Impact
Highest effect
Magnesium · 200 mgMelatonin · 0.3 mgTheanine · 200 mgGlycine · 3000 mg
Impact
High effect
Magnesium · 200 mgGlycine · 3000 mgTryptophan · 250 mgTheanine · 200 mg
Tryptophan Not classified
No linked studies yet.
Impact
Highest effect
Magnesium · 200 mg5-HTP · 100 mg
Impact
High effect
Magnesium · 200 mg
Tryptophan Not classified
No linked studies yet.
Impact
Moderate effect
Magnesium · 200 mg
Theanine Not classified
No linked studies yet.
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, with a moderate cost per 100 mg. No branded source or additional purity claim is recorded.
How this ingredient is rated
Active Ingredient Quality & Bioavailability80
The ingredient is L-theanine. No branded source or additional purity claim is recorded.
Isomer Specificity (L-Theanine)
The form is L-theanine.
Branded Forms & Purity Standards
No branded source or additional purity claim is recorded.
Dose, Safety & Label Transparency100
Each serving provides 200 mg of L-theanine.
Theanine Dosage Efficacy
Each serving provides 200 mg of L-theanine.
Label Transparency & Blends
The L-theanine amount is stated separately.
Value80
The cost per 100 mg of theanine is moderate.
Price per 100mg L-Theanine
The cost per 100 mg of theanine is moderate.
Glycine · 3000 mg OverallScore55
The serving supplies 3000 mg of glycine at a moderate cost per gram. That matches the amount described for sleep quality. The available information does not establish a glycine purity grade or independent purity certification. Ordinary excipients or capsule materials are present; their specific identities are not available here.
How this ingredient is rated
Active Ingredient Quality & Bioavailability0
The available information does not establish a glycine purity grade or independent purity certification.
Glycine Sourcing and Purity Standards
The available information does not establish a glycine purity grade or independent purity certification.
Dose, Safety & Label Transparency94
The glycine amount is stated as 3000 mg per serving. Ordinary excipients or capsule materials are present; their specific identities are not available here.
Clinically Relevant Dosage
3000 mg per serving matches the amount described for sleep quality.
Label Transparency and Yield Disclosure
The glycine amount is stated as 3000 mg per serving.
Clean Label and Excipient Quality
Ordinary excipients or capsule materials are present; their specific identities are not available here.
Value85
The cost per gram of glycine is moderate.
Cost Efficiency per 1,000mg of Glycine
The cost per gram of glycine is moderate.
Melatonin · 0.3 mg OverallScore46
The serving provides 0.3 mg melatonin. The whole-product cost per serving is high. No certification details are available in the information.
How this ingredient is rated
Active Ingredient Quality & Bioavailability0
No certification details are available in the information.
Third-Party Purity Verification
No certification details are available in the information.
Dose, Safety & Label Transparency100
The serving provides 0.3 mg melatonin.
Physiological Dosing Alignment
The serving provides 0.3 mg melatonin.
Value30
The whole-product cost per serving is high.
Price Per Serving Efficiency
The whole-product cost per serving is high.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Implantoplasty Versus Glycine Air Abrasion for the Surgical Treatment of Peri-implantitis: A Randomized Clinical Trial.
- Amino Acid Intakes Are Associated With Bone Mineral Density and Prevalence of Low Bone Mass in Women: Evidence From Discordant Monozygotic Twins.
- Type V osteogenesis imperfecta: a new form of brittle bone disease.
- Associations of Dietary and Circulating Choline and Glycine With Bone Mineral Density: UK Biobank Analyses With Mendelian Randomization.
- Metabolomic insights into amino acid signatures and pathways associated with osteoporosis in Iranian elderly population.
- Association between Serum Magnesium and Fractures: A Systematic Review and Meta-Analysis of Observational Studies.
- Bioabsorbable Magnesium-Based Materials Potential and Safety in Bone Surgery: A Systematic Review.
- Vascularized bone grafting fixed by biodegradable magnesium screw for treating osteonecrosis of the femoral head.
- An update on magnesium and bone health.
- Sex-specific differences in the association of magnesium intake with femoral neck bone mineral density among older adults.
- 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.