Collagen for skin and joints: dose, form, and what to ignore

Hydrolyzed peptides survive digestion

Intact collagen is too large to absorb. Hydrolyzed collagen peptides (2–5 kDa) are absorbed intact and deliver specific dipeptides — hydroxyproline-proline and hydroxyproline-glycine — that signal fibroblasts to upregulate endogenous collagen synthesis.

Clinical doses

Studies showing measurable improvements in skin elasticity, hydration, and joint comfort used 10–15 g per day of types I + III for 8–12 weeks.

Citations available on request. ZYVORA articles reference peer-reviewed clinical research published in journals including JAMA, The Lancet, Nutrients, and the American Journal of Clinical Nutrition.