EVIDENCE-BASED SUPPLEMENT SCORING
8.5/10
TOP TIER

Confidence: 80%

Source Naturals Melatonin, Helps Promote Sleep* - 2 mg - 120 Time Release Tablets

Source Naturals Melatonin, Helps Promote Sleep* - 2 mg - 120 Time Release Tablets

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Decision summary

CONSIDERTOP TIER

A strong option overall. Its main value comes from evidence quality, but the listed weaknesses are still worth checking…

Best for

People prioritizing high absorption and overall formula quality.

Consider another option if

You need a very specific optimization beyond what the current scoring output captures.

Score breakdown

Tap a module to see what it measures. A 0 can reflect missing disclosure, not just a negative result.

Dosage quality

6.9/10

Acceptable dosing, but not standout

Checks whether labeled ingredient amounts fall within clinically studied ranges (not just regulatory minimums). Low/0 can reflect under-dosing or missing amounts (e.g., proprietary blends).

Score summary

Melatonin: high-bioavailability form declared (Melatonin). The main limitation is that calcium: below clinically studied range.

Strengths

Melatonin: high-bioavailability form declared (Melatonin)

Weaknesses

Calcium: below clinically studied range

Final verdict

A strong option overall. Its main value comes from evidence quality, but the listed weaknesses are still worth checking before buying.

Ingredient Analysis & Evidence

A closer look at the main ingredients, how they influence the score, and the supporting evidence when available. Tap any ingredient to expand.

ℹ At the minimum effective range, but below the optimal dose; evidence is strong

Dose meets the minimum effective range, but is below the optimal dose used for stronger effects. Adequate, but not a key strength: Dose is directionally useful, but not a standout strength. The declared form supports strong absorption.

Scientific evidence

Meta-analysis

Ferracioli-Oda et al. meta-analysis melatonin and sleep disorders

PLOS ONE • 2013

PMID: 23691095.0

⚠ Strong evidence exists, but dose is below effective threshold

Dose is below the minimum effective threshold. A clear drag on the formula: Dose is likely below clinically useful levels. The declared form is acceptable, but not among the best-absorbed options.

Scientific evidence

Meta-analysis

Tang et al. meta-analysis calcium supplementation and fracture risk

BMJ • 2007

PMID: 17720017.0

Source Naturals Melatonin, Helps Promote Sleep* - 2 mg - 120 Time Release Tablets

Source Naturals Melatonin, Helps Promote Sleep* - 2 mg - 120 Time Release Tablets

Warnings & notes

Important label or formulation details that may affect how this product should be interpreted.

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Calcium dose looks below clinically effective levels

Declared amount falls below ranges used in human trials.

Warning

Methodology

Read our methodology overview to understand how SuppScoreLab combines multiple scientific dimensions into one practical score.

View methodology →

This evaluation is based on the product label and declared Supplement Facts available at review time. It does not verify laboratory-tested composition, purity, or batch-level quality. This content is educational and not medical advice. Consult a qualified healthcare professional for personal health decisions. Affiliate disclosure: SuppScoreLab may earn a commission from qualifying Amazon links.

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