Ingredient & formula quality
Dose suitability, formula clarity, additives, sugars and evidence-based supporting ingredients.
SUPPLEMENT INDEX PUBLISHED METHODOLOGY
One category.
Two separate rankings.
Hydrolysed collagen peptides use gram-dose comparisons. Undenatured Type II capsules use milligram daily-dose comparisons. Their value rankings never cross.
Hydrolysed Collagen Peptides
Value / effective serve
Real cost of the relevant gram-dose collagen serve—not merely the advertised scoop.
Source, type & transparency
Source, type, origin, manufacture, traceability and relevant disclosures.
Evidence & testing
Ingredient relevance, claim quality and disclosed exact-product or third-party testing.
User rating
Published stars and review volume, adjusted for confidence; unavailable data receives a neutral score.
Undenatured Type II Capsules
Ingredient & formula quality
The undenatured Type II ingredient and daily milligram dose are assessed against evidence for that exact form.
Value / effective serve
Cost is calculated per evidence-relevant daily capsule dose—not per gram and never against powders.
Source, type & transparency
Type II source, branded ingredient, origin, manufacture, traceability and relevant disclosures.
Evidence & testing
Form-specific evidence, dose match, claim quality and disclosed exact-product or third-party testing.
User rating
Published stars and review volume, adjusted for confidence; unavailable data receives a neutral score.
Beauty and general peptides
Value is normalised to the cost of 10 g of actual collagen, not the advertised scoop or number of “serves.” The 10 g unit is a comparison tool—not a claim that everyone should take 10 g.
Joint products
Hydrolysed peptides are assessed in grams. Undenatured Type II is assessed in milligrams and against evidence for that form. Value is calculated only within the same form group.
Ratings carry 10%, with confidence adjustment
We use a published aggregate star rating only when it can be matched to the product. A Bayesian adjustment pulls small samples toward a 4.5 category prior using 100 prior reviews, then converts the adjusted rating to a maximum of 10 points. Products without reliable rating data receive a neutral 5/10—not a reward or a severe penalty. Ratings describe customer experience, not clinical effectiveness.
≤2% receives no penalty
We do not reward “zero sugar” marketing. Unsweetened formulas score well; naturally derived sweeteners are preferred where needed; artificial sweeteners receive a small deduction and high added sugar a larger one.
Claims must be traceable
A brand phrase is not evidence. Higher status requires a named ingredient, relevant human evidence and a supplied amount that can be matched to that research.
Exact product, not brand halo
General GMP or “lab tested” statements are not treated like a public, exact-product or batch-specific report. Missing evidence is recorded as not verified; that is not a safety warning.
Commercial relationships never change a score
Affiliate status, referral arrangements, free samples and commercial relationships are excluded from the rating calculation. Every product is assessed against the same published rules.
Meaningfully available locally
Products must have an official AU/NZ store, established local distributor or reputable local retail channel. Technical importability alone does not qualify.
Evidence foundations
The framework distinguishes collagen forms because published research uses very different doses and mechanisms. It also avoids presenting dietary supplements as medical treatment.
Review: collagen supplementation for joint health ↗Study: 40 mg undenatured Type II ↗Harvard Nutrition Source: collagen ↗General comparison information only. Scores reflect the published framework and information available on the date shown; they are not clinical recommendations or guarantees of outcomes.