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Clinically dosed — the label discloses at least as much Collagen per serving as clinical trials used. The black tick on the bar marks the trial dose.
Under clinical dose — the label is honest about the amount, but it's less than the studies used, so the studied effect may not apply.
Dose not disclosed — the label doesn't let you verify the amount at all (usually a "proprietary blend" that only prints the mixture's total weight).
Data verified 2026-07-18 · Scored against: Collagen peptides, skin: lowest studied effective dose 2.5 g/day (Proksch et al. 2014, Verisol RCT - improved skin elasticity in women 35-55; also effective at 5 g). 2025 meta-analysis (10 RCTs, 646 participants): most common dose 4 g/day (median 3.5 g). Joint studies use 5-10 g. We use the 2.5 g skin floor (lower bound of the studied 2.5-10 g range). 'Sufficient' means meeting the lowest clinically studied dose, not any specific outcome; multi-type collagen blends count their disclosed total (all sub-types are collagen).. How scoring works →
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Educational information from the product's own label data, not medical advice. Some outbound links may earn us a commission — it never changes a product's dose score. Label data can lag reformulations; the linked NIH DSLD entry is the label we scored.
Yes — the label discloses 10 g of Collagen per serving, at or above the 2.5 g/day used in clinical trials.
Every clinically dosed, no-blend product in this category — free, plus score-change alerts.