Methodology
How we determine whether a supplement actually works — not just what the label claims.
This methodology is designed to help you evaluate supplement quality, effectiveness, and real-world value. Most supplements look convincing on paper — but fail in practice due to poor dosage, weak evidence, or ineffective ingredient forms. Unlike generic supplement reviews, our system evaluates what actually determines results, not just ingredient presence.
This framework is built on established clinical nutrition principles and regulatory reference standards — adapted for real-world supplement evaluation.
What we evaluate
Every score is built around the attributes that most determine whether a supplement delivers meaningful results in practice — not in theory. This is how to choose supplements that actually work.
In practice, many supplements fail not because of the ingredient choice — but because of insufficient dosing, poor ingredient forms, or incoherent formulations.
- Whether declared doses fall within clinically relevant ranges.
- The strength and quality of evidence behind each ingredient.
- How well the body can absorb and use the ingredient form declared.
- Whether the label provides enough detail to make an informed assessment.
- Safety relative to established upper limits and known interactions.
- The quality and necessity of inactive ingredients and additives.
- Whether the formula is internally coherent — ingredients that support, not undermine, each other.
Evidence framework
We prioritise human clinical evidence and clinically effective doses — not marketing claims or theoretical benefits. The bar is what works in real people, not what sounds impressive on a label.
Not all evidence is equal — and most supplement claims rely on weak or indirect data.
Human clinical trials
We prioritise randomised controlled trials and meta-analyses in humans. Mechanistic and animal data is considered but carries significantly less weight.
Institutional references
Dosage benchmarks and safety limits are anchored to guidelines from recognised bodies including the NIH Office of Dietary Supplements and EFSA.
Established dosage guidelines
We reference clinically studied dose ranges — not manufacturer recommendations or regulatory minimums, which often reflect the minimum required, not the effective amount.
Real-world applicability
Evidence is weighted by its relevance to a supplement taken by a healthy adult in a daily routine — not by study population outliers or extreme conditions.
How the score works
The goal is simple: identify whether a product will actually deliver meaningful results in real use. The system evaluates not just what ingredients are present, but whether they are likely to produce a meaningful effect at the declared dose.
Dosage quality and evidence strength are the most influential factors. Bioavailability refines the dose assessment. The remaining dimensions — transparency, safety, excipients, and formulation coherence — sharpen the final verdict. No exact weights are published to prevent reverse-engineering of the model.
Relative contribution — illustrative
Some factors contribute more strongly — dosage and evidence — while others refine and contextualise the result. Exact weights are not disclosed.
Dosage quality
Evaluates whether the amount of each ingredient is sufficient to produce a real effect — based on clinically studied ranges, not regulatory minimums.
Evidence strength
Grades the scientific support behind each ingredient — distinguishing robust human trial evidence from early-stage, animal, or mechanistic data.
Bioavailability
Assesses the ingredient form declared — because a well-dosed ingredient in a poorly absorbed form still fails to deliver. Form selection is a strong signal of formulation intent.
Transparency
Flags proprietary blends, undisclosed quantities, and label structures that make independent assessment impossible. Opacity is penalised.
Safety
Compares declared doses against established tolerable upper intake levels and known interaction risks. High doses approaching safety thresholds are flagged regardless of efficacy.
Excipients
Reviews inactive ingredients — fillers, flow agents, coatings, and preservatives — for necessity, safety concerns, and potential interference with active ingredient performance.
Formulation coherence
Evaluates how well the formula holds together as a whole. Detects redundant ingredients, conflicting mechanisms, and combinations that look impressive on paper but fail in practice.
How to read product pages
Each product page is designed to give you a clear, actionable picture — not a data dump. The goal is to help you decide, not to overwhelm.
Score breakdown
Each dimension scored individually so you can see exactly where a product excels or falls short.
What works
Plain-language summary of the formulation's genuine strengths — no marketing spin.
What to watch out for
Flags underdosed ingredients, poor forms, opacity issues, or anything that should give you pause.
Ingredient context
Per-ingredient interpretation for the key actives — what the evidence says and whether the dose is meaningful.
Bottom line
A practical verdict you can use when deciding whether this product is worth your money.
What we don't publish
To protect the integrity of the scoring model and prevent gaming, we do not publish exact weights, internal scoring logic, or engine internals. What we evaluate and why is fully transparent. How the model weighs each factor is not.
Important notice
SuppScoreLab evaluations are based solely on the product label and declared Supplement Facts available at the time of review.
We do not verify laboratory-tested composition, purity, or batch-level quality. Scores reflect label-based assessment, not independent testing. This is educational content, not medical advice. Consult a qualified healthcare professional before making health decisions.
Stop guessing. Start scoring.
Paste any Amazon supplement link.
Results in under 30 seconds.