Age-related bone loss and muscle loss are increasingly studied together as “osteosarcopenia,” since the two tissues interact mechanically and hormonally. A 2025 meta-analysis of 20 studies (17 RCTs) on collagen peptide for bone and muscle health found significant pooled improvement in bone mineral density (SMD 0.40–0.58) and muscle performance (SMD 0.60), with “positive synergies” specifically when collagen was paired with calcium and vitamin D — the combination this SKU is built around.
The single largest individual trials behind the collagen dose itself — a 12-month bone density RCT in postmenopausal women, and a body-composition RCT in sarcopenic men — both used bovine-sourced peptide, not marine, so this SKU's evidence is broader at the category level than it is proven at the exact-peptide level.
Frontiers in Nutrition, 2025 — combined meta-analysis
König et al., 2018 — bone RCT
Zdzieblik et al., 2015 — muscle RCT
~18.6 g (unflavoured) this is a large serving; plan packaging and flavour-system dosing accordingly
Fine-mesh powder, water-dispersible; calcium citrate is the main driver of any grittiness at this scale worth a dispersibility test
Shake/scoop format is the natural fit given the serving size; a stick-pack would need to be oversized relative to the rest of the line
