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Methodology

How this works, and why you can trust it.

Why we started with collagen

Collagen is one of the highest-interest, highest-confusion categories in supplements. Doses vary wildly, label claims often outrun the science, and influencer marketing has muddied the water.

How products are selected

We choose products based on market presence, ingredient transparency, and the availability of evidence to evaluate them properly - not brand relationships. Products are excluded if they withhold ingredient information, refuse to disclose dose, lack any third-party testing while making sport or medical claims, or use misleading labels like "vegan collagen."

How ratings are built

Each product is rated on five criteria:

  • Dose vs evidence thresholds (5–15g daily for hydrolysed; 40mg for UC-II)
  • Ingredient quality and label cleanliness
  • Source transparency
  • Third-party testing (Informed Sport, NSF, USP, etc.)
  • Value per serving and fit for the stated goal

Higher ratings don't go to products with bigger marketing budgets.

What 'evidence' means here

Collagen research is genuinely mixed. Some outcomes - skin elasticity at 8–12 weeks, post-menopausal bone density with specific peptides, UC-II for joints - have multiple well-designed studies. Others, like gut and hair claims, rest on smaller or industry-funded studies. We flag where evidence is strong, where it's suggestive, and where brands overclaim.

The vegan collagen question

True vegan collagen doesn't exist - collagen is, by definition, an animal protein. Products labelled "vegan collagen" contain collagen-boosting ingredients like vitamin C, silica, and amino acids that support your body's own collagen production. That can be useful - but it's not the same thing. We explain it clearly and without judgment.

Affiliate disclosure

We earn commission on some purchases made through our links. This never influences which products we cover, how we rate them, or what we say about them. If a top-rated product had no affiliate programme, it would still sit at the top.

More categories coming

Collagen is the first. Electrolytes, magnesium, protein, and gut health will follow using the same goal-led, evidence-first model.

Health disclaimer

This platform provides information to support buying decisions. It is not medical advice. If you have a health condition, are pregnant, or take medication, speak to a doctor before starting any supplement.