Collagen
Specialty
Hydrolyzed protein marketed for skin elasticity and joint comfort.
Form: Powder
Recommended intake: 5–10 g/day (hydrolyzed)
Benefits
May improve skin hydration and elasticity over 8–12 weeks; some evidence for joint comfort in active adults.
Warnings
Marine-source products may trigger fish allergies. Not a complete protein.
Description
Hydrolyzed collagen peptides provide glycine, proline, and hydroxyproline. Marine and bovine sources are most common. The skin and joint benefits in trials are modest but consistent across small studies.