Peptan®
Collagen peptides with a substantial human research base.
Peptan® is the collagen peptide foundation behind much of the CollagenX range.
Its research programme includes human studies across skin, mobility, healthy ageing, bone and sports nutrition, with research conducted by Rousselot and in collaboration with universities and research institutes.
And the results are measurable.
- 8% Improvement in skin density
- 7% Increase in skin elasticity
- 14% Increase in skin hydration
These are outcomes reported from clinical studies of Peptan.
Other human research has investigated Peptan in areas including joint discomfort, recovery, sleep and exercise-related outcomes.
Video credit (to right): © Peptan
Colartix®
Specific science for joints.
Colartix® is a hydrolysed cartilage matrix containing collagen peptides and naturally occurring chondroitin sulfate, specifically developed for joint care.
In a placebo-controlled study of more than 200 people, taking 1 g daily produced a statistically significant reduction in joint discomfort after three weeks. The reduction remained apparent four weeks after supplementation stopped.
200+ people - Studied across different ages, genders and activity levels
1 g daily - The amount studied
3 weeks - Time to statistically significant reduction in joint discomfort
Video credit (to left): © Peptan
Nextida® GC
Collagen science moving into metabolic biology.
In a 2026 randomised, double-blind, placebo-controlled human study, 30 people consumed 10 g of Nextida GC before a carbohydrate-rich meal.
The result was a substantially lower post-meal glucose response, alongside increased GLP-1 and GIP responses.
37% lower - Overall post-meal glucose response
47% lower - Peak glucose level
53% higher - GLP-1 response
70% higher - GIP response
GLP-1 remained elevated for two hours after the meal, with slower gastric emptying also observed in participants with prediabetes.
Video credit (to right): © Rousselot
This is what evidence-led formulation looks like
We don't start with an ingredient and then look for something to say about it. We start with the biology.
Understand the biology. Review the evidence. Choose the ingredient. Formulate with purpose.
Sometimes the evidence is established. Sometimes it is emerging. We don't need to make every study sound like a breakthrough. We simply show you what the research found.
Photo credit (to right): © Sébastien Borda
Want to look closer?
Our Evidence Files take a deeper look at the research behind specific ingredients, biological processes and health areas.
Evidence File #001
Skin & Beauty
Evidence File #004
Bone Health
Evidence File #003
Joint Health
Evidence File #005
Exercise & Recovery
Evidence File #007
Collagen Absorption
Evidence File #009
Metabolic Collagen
Read the studies. Understand the biology. Follow the evidence.
Because "evidence-led" should mean more than a phrase on a website. It should mean you can see the evidence for yourself.
