Two collagen sources, not one doubled up. Here's the actual difference.
Restore & Grow uses 5g bovine collagen and 5g marine collagen — not because more sources sounds better, but because they're different collagen types with different strengths. This page shows you what each one is, side by side.
Marine collagen
Marine collagen has a smaller average peptide size than bovine collagen, which is associated with faster absorption. A meaningful share of the clinical research specifically linking collagen supplementation to skin outcomes — hydration, elasticity — has used marine-sourced peptides.
Current researchNot yet an authorised claimBovine collagen
Bovine collagen carries both Type I and Type III — a broader profile than marine alone. A large share of the joint-comfort and cartilage research in the clinical literature has used bovine-sourced collagen specifically, reflecting Type III's role in connective tissue.
Current researchNot yet an authorised claimThe direct comparison
| Marine | Bovine | |
|---|---|---|
| Source | Fish | Cattle |
| Collagen type | Type I | Type I & III |
| Relative peptide size | Smaller | Larger |
| Most researched for | Skin hydration & elasticity | Joint comfort & cartilage |
| Dose in this formula | 5g | 5g |
Both, in every sachet
10g total dual-source collagen, alongside creatine, B12, D3, vitamin C and CocoVital®.